‘This was a righteous case. A holy war’: the lawyer who took on Meta and Google – and won

When Mark Zuckerberg walked into a Los Angeles courtroom on 18 February flanked by an entourage bedecked in Meta Ray-Bans, some people laughed. If this was an attempt at product placement for the company’s newest range of smart glasses, it was jarringly ill-judged: Zuckerberg was about to testify before a jury in a landmark lawsuit that sought to prove that Instagram and YouTube are addictive by design, and he had passed a throng of bereaved parents on his way into the courthouse. But the prosecution team, led by Mark Lanier, were not laughing.

This was a serious trial. For the first time, the most powerful names in social media were being held to account for the inherent design of their platforms, rather than the content hosted on them. They were accused of deliberately and maliciously building products that keep children hooked, with disastrous consequences for the mental wellbeing of young people. It was a landmark case – a big tobacco moment for big tech.

But there were specific reasons why the prosecution was deeply disturbed to see Meta Ray-Bans in court. “We had fought hard for an anonymous jury. We didn’t want the names disclosed in a way where Google could go pull up their Gmails, where Meta could go pull up their Facebook accounts,” Lanier tells me in his warm Texas drawl. “Then Zuckerberg shows up with security guards wearing Meta glasses. They can easily [use photos from the glasses and] do facial identification and figure out exactly who the jurors are.” This was not product placement, Lanier says – it was the deployment of the most relentless form of digital surveillance the world has ever known.

The prosecution appealed to the judge, pointing out that Zuckerberg’s entourage was breaking rules that forbade cameras in the courtroom. “The judge made them swear that they hadn’t taken any pictures.” Lanier says. “And then they took the glasses off.”

The case of KGM v Meta et al was always going to be as hi-tech as it was high stakes. KGM – also known by her first name, Kaley – claimed that an addiction to social media that had begun with YouTube at age six and Instagram at age nine had caused her to develop body dysmorphia, anxiety and depression. (Snapchat and TikTok, named in Kaley’s original complaint, had settled out of court for an undisclosed sum before the trial began.) Lanier’s team had to convince the jury that Meta and Google had engineered their products to be addictive. It was a test case that could blaze a trail for thousands more to come.

“I’d never been in court before,” Kaley, now 20, tells me in her first newspaper interview. “Seeing all those people, and having all their eyes on me, was very overwhelming.”

Lanier knew this was a case like no other – and that his opponents were prepared to use every power at their disposal to win it, including artificial intelligence.** **Google and Meta have their own AIs: Gemini and Meta AI, respectively. Lanier was determined to beat them at their own game. (A self-described “AI zealot”, his firm employs a team of five whose sole responsibility is to produce a weekly report for him on advances in AI over the previous seven days.) Lanier asked a company called BoodleBox to make him a bespoke AI incorporating a combination of Gemini, Claude, ChatGPT and other existing models. He used it in “30 different ways” for Kaley’s case, he says, but when he tells me about just one of them, my jaw drops.

The jury might have been anonymous, but the legal teams were able to gather a significant amount of data about each member during jury selection, Lanier explains. “We have questionnaires they filled out that tell us their age, their gender, their occupational history, their family status. But it gives us more insight: it asks, who are three people you most admire and why? Who are three you *least* admire and why? How do you feel about this or that on a scale of one to 10?” Armed with a dossier of information, Lanier’s AI created models of every juror, “a demographic and psychological exemplar” of each one that allowed him to try out potential arguments on individual members. At the end of each day in court, he would feed the transcripts to his AI shadow jury and ask questions. What did juror number 11 think of the witness? What did juror number seven think was important? Where did juror number three get confused? “Pretty cool,” he grins.

AI can be used for good or abused for evil, Lanier says – just like litigation, which he has been practising for 42 years, or religious faith, which guides everything he does. A devout Christian, Lanier believes he is on a divine mission to take on companies that enrich themselves by exploiting the vulnerable.

“The opposing side had unlimited resources. They had *dozens* of lawyers in the courtroom. To call it a David versus Goliath storyline is maybe giving too much credit to David, but it’s the best descriptor I can give,” he says; the disparity between him and his opponents was even larger than the biggest mismatch in biblical history. “This was a righteous case, without a doubt. It was a holy war.”

On 25 March, when the (real, human) jury returned its verdict, Lanier stood on the steps of the courthouse alongside two of his five children – daughters Sarah and Rachel, who worked with him on the case – and hailed “a righteous moment”. The jury had found Google and Meta liable on all counts and had awarded Kaley $6m: $3m in compensatory damages and an extra $3m in punitive damages, because Meta and Google were found to have “acted with malice, oppression or fraud”. Meta will shoulder 70% of the bill, with Google picking up the rest. But these damages are only the beginning: more than 2,000 similar lawsuits are now being brought against social media companies, accused of harming the mental health of children with products that are addictive by design, using the legal route Lanier proved viable in Kaley’s case.

Ever since they stood behind Trump at his second inauguration, the power of the tech titans has seemed ever more unassailable. (Lanier tells me big tech now hires one lobbyist for every six members of the 441-strong US House of Representatives.) But Kaley’s legal victory is a reckoning – one that could threaten the entire social media business model.

“Politicians will never hold these people accountable. The only thing they fear is a jury,” Lanier says. “I get 12 ordinary people, and they’re empowered. And when they hear that evidence and they take their oath seriously – *bam*! – they can do something.”

I meet Lanier in Yarnton Manor, a grade II-listed estate in Oxfordshire, built in 1611 by Sir Thomas Spencer, a distant ancestor of Diana, Princess of Wales. He lounges on a teal sofa in one of the wood-panelled rooms, sometimes with a leg dangling over the sofa’s arm, sometimes hugging one of the velvet cushions, often leaning forward to gesticulate in animated excitement as he shares a biblical reference or damning piece of trial evidence. It’s a swelteringly hot day in late May, and Lanier, 65, flew in from Houston yesterday, but he looks fresh as a daisy. He only needs four hours’ sleep a night. “Sleep’s a bonus, but not one that’s necessary.”

Lanier’s charitable foundation bought Yarnton in 2021 and turned it into a centre for religious study. He preaches in a Baptist church every Sunday; he has another study centre in Houston. “In the US at least, Christian faith has a bad reputation of being vibrant only among uneducated, unenlightened, bigoted, narrow-minded people. Those of us who hold on to a faith are responsible for trying to bring out the good that can come from it – not the holier-than-thou stuff that seeds division,” he says. “I’m a lawyer who has funded all of this by trying to grab hold of people whose conduct has been destructive.” He draws a rectangle in the air above his head, tracing the corners of the ornate coved ceiling. “It was the Johnson & Johnson case that bought this,” he grins. “My wife and I call this the J&J Manor House.”

Before he took on Google and Meta, Lanier was involved in some of the most high-profile landmark litigation cases in the history of big pharma. In 2018, he won $4.69bn (reduced on appeal to $2.12bn) for 22 women with ovarian cancer and their families after Johnson & Johnson failed to warn them of the carcinogenic risk associated with the talc in their Baby Powder. Natural talc is often mined within close proximity of carcinogenic asbestos; Lanier argued that Johnson & Johnson had known this for decades without warning the public. (Johnson & Johnson said in 2018: “J&J’s baby powder is safe and does not cause cancer. Studies of tens of thousands of women and thousands of men show that talc does not cause cancer or asbestos-related disease.”) In 2019, he won an 11th-hour $260m settlement from opioid manufacturers and distributors on the eve of what would have been the first federal trial in the history of the opioid epidemic.

Lanier’s “bread and butter”, he says, involves ubiquitous, household-name products that can cause serious harms, which the companies behind them know about but choose not to act on. “Normally, I want an eye-popping verdict that causes Wall Street to recoil and causes in-house lawyers to lose their jobs and companies to respond differently,” Lanier told a podcast recently.

When he began his career, at a big Houston law firm, he just liked winning. He learned the psychological skills and rhetorical techniques that helped him excel in court: how to make things memorable, how to read a room and change the energy in it, “how to make word choices that will trigger visceral reactions, how to use story to bypass people’s natural defences”. But after five years of straight wins, he lost – in a case where he knew his client was in the wrong. Licking his wounds on the drive home, he had an epiphany. “I thought, what am I doing? Did I almost take my gifts, my talents, my skills and wield an injustice?” Aged 29, Lanier started his own firm so he could pick what he considered to be “righteous” cases. “You can do horrible things with this power, or you can do good.”

Lanier estimates that settlements from drug companies following his landmark opioid litigation are now in excess of $10bn. His victory in the Johnson & Johnson case opened the floodgates to tens of thousands of claims from people with cancer and their families – including one currently in the high court of England and Wales, with more than 7,000 claimants. J&J deny the allegations.

In the wake of Kaley’s win against Google and Meta, the former Facebook employee turned whistleblower Frances Haugen claimed that Meta could be on the hook for $1tn in future damages from tens of thousands of people who have been harmed by the use of their platforms as children. This might be an overestimation, Lanier says. “But tens of billions, easy. Part of it also is: are they willing to make real change? Reasonable change is something that a lot of us would put a high value on.”

At the time of the Johnson & Johnson verdict, Lanier remarked that suing in an initial test case with only a small cluster of plaintiffs allowed him to maximise the emotional impact of claimants’ stories on the jury. “It’s easier to get justice in small groups,” he said. “In small groups, people have names, but in large groups, they’re numbers.”

Kaley was a lone plaintiff, and a reluctant trailblazer. It was her mother who brought her case to the attention of lawyers. (Kaley was identified only as KGM in court because the alleged harms took place when she was a child.)

“I was really scared,” Kaley tells me in a video call; she has chosen to keep her camera switched off. “I had a lot of anxiety around the thought of them deleting my accounts as a punishment. And that did end up happening, at least with Snapchat.”

There’s a duality to the way Kaley speaks: giving evidence in the trial has prepared her to be able to answer difficult questions about the most challenging parts of her life, and that, combined with her low voice, can make her sound older than her 20 years. But her responses are often brief and staccato, and she sometimes struggles to find the right words, like a teenager.

Brought up by a single mother in Chico, California, along with an older brother and sister, Kaley grew up with learning disabilities, in a household without much disposable income. By the time she was nine, she had uploaded hundreds of videos to YouTube, and soon had dozens of accounts on both YouTube and Instagram. “I liked that I could post my own stuff and see how many likes I got. I liked being able to see what my friends were up to.” When Kaley wasn’t posting, she was scrolling. She stopped engaging with her family. She no longer left her home. Once, she spent more than 16 hours on Instagram in a single day.

“I was on it every day from the moment I woke up to the moment I went to bed. I was on my phone during class – I would get in trouble, I got bad grades because I was not paying attention.” She was terrified at the thought of anything happening to her phone. “If I was walking next to a lake or something, I’d be so scared that I was going to drop my phone and lose my social media.”

Her mother tried to intervene, activating screen time limits or confiscating Kaley’s phone altogether. “But I would freak out,” Kaley says. “I had withdrawal symptoms. It was just so hard to do anything else.” She would get up in the middle of the night to search for her phone, or “beg and beg and cry” until she got it back. When her mother removed Instagram from Kaley’s phone, Kaley sneaked a hand-me-down phone from her older sister so she could download the app again without her mother knowing.

Almost as soon as she joined Instagram, Kaley started playing with filters, enlarging her eyes, shortening her nose. “I’d take a selfie with a filter on, and then see myself – how I *actually* looked – and I would just feel really ugly,” she says. “It made me get all these new insecurities, and to see myself in a way that others didn’t actually see me.” Aged 10, Kaley started to cut herself. She went on to be diagnosed with depression, anxiety and clinical body dysmorphia.

Lanier didn’t want Kaley to sit through the entire trial. She gets easily distracted, he says; plus, it was his job to convince the jury that she had been seriously harmed by Google and Meta’s products. He didn’t want her to come away from it believing she was irredeemably damaged.

Delivering his opening statement, Lanier stacked three wooden ABC toy blocks on top of each other. “I thought, I will tell the jury this case is as simple as ABC – Addicting the Brains of Children,” he explains. “There’s a principle in psychology and learning called cognitive ease: we automatically assign credibility to the things we more easily understand. There’s a principle in rhetoric: the power of threes. Threes just seem to resonate within our soul and minds. ABC, one, two, three.” (In his opening statement at the Jo