GOP Sen. Josh Hawley of Missouri grilled Meta CEO Mark Zuckerberg Wednesday at a congressional hearing regarding child safety on social media platforms. Hawley even elicited an apology from Zuckerberg to family members of those who have been harmed through content on social media. Meta is the parent company of Facebook and Instagram. During the Senate Judiciary Committee hearing, Hawley, the former Missouri attorney general, first cited statistics he said were from a study conducted by Instagram. The senator noted that the study found that among 13-15 year olds, 37 percent reported seeing unwa…