Meta CEO Mark Zuckerberg and the chief executives of X, TikTok, Discord and Snap face a grilling by US lawmakers on Wednesday over the dangers that social media platforms bring to children and teens. The tech chieftains have been convened by the US Senate Judiciary Committee where they will be asked about the effects of social media in a session titled "Big Tech and the Online Child Sexual Exploitation Crisis." The hearing promises to be grueling for the executives who are facing political anger for not doing enough to thwart online dangers for children, including from sexual predators. "These CEOs have serious questions to answer about their shameful track records on child safety, and their attempts to keep these failures from public view for so many years," said Imran Ahmed, CEO and founder of the Center for Countering Digital Hate. Testifying to senators will be Mark Zuckerberg, X's Linda Yaccarino, Shou Zi Chew of TikTok, Evan Spiegel of Snap and Discord