TikTok October 8, 2024 4:56 pm California joins 13 other states in suing TikTok California and 13 other states accuse the social media platform TikTok of damaging young users’ mental health. Conan Nolan reports for the NBC4 News at 3 p.m. on Tuesday, Oct. 8, 2024. US & World Videos 2:03 Man with machete shot and killed by deputies 0:45 First Alert Air Quality Forecast: Thursday, Jan. 30 0:21 Man wanted for stabbing woman in East Hollywood 2:21 Backlash over EPA plans for hazmat site in Azusa 2:35 Deadly mid-air disaster turns into recovery operation