TikTok is facing what it views as perhaps its biggest crisis yet, with the world’s most popular app facing an intense backlash over the perception it favors pro-Palestinian and, at times, antisemitic content.

Citing anti-Israel posts that surfaced on TikTok since the Gaza conflict began and a decades-old Osama bin Laden letter that circulated this week, Washington lawmakers have renewed calls to ban the app in the U.S.