Meta's top executives, including CEO Mark Zuckerberg, ignored warnings for years about harms to teens on its platforms such as Instagram, a company whistleblower told a Senate subcommittee. Meta instead fosters a culture of "see no evil, hear no evil" that overlooks evidence of harm internally while publicly presenting carefully crafted metrics to downplay the issue, said Arturo Bejar, an ex-Facebook engineering director and consultant. Bejar is the latest former insider to level public allegations that the tech giant knowingly turns a blind eye to problems that its policies and technology cannot cheaply or easily address. [Bejar] first became motivated to study the issue because of unwanted sexual advances his own 14-year-old daughter received from strangers on Instagram. "It is unacceptable that a 13-year-old girl gets propositioned on social media," Bejar testified, citing a statistic from his research finding that more than 25% of 13-to-15-year-olds have reported receiving unwanted sexual advances on Instagram. Lawmakers on Tuesday ripped into the social media giant. "They hid from this committee and all of Congress evidence of the harms that they knew was credible," said ... Sen. Richard Blumenthal. Missouri Republican Josh Hawley blasted Big Tech companies for spending "gobs" of money ... to thwart bills that would restrict the industry's power. He also accused Meta of "cooking the books" on data related to mental health harms.