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 0:22 Man arrested after pointing gun at person in Rosemead 1:34 2 killed in Pasadena wrong-way crash on 134 Freeway in Pasadena 1:56 Search for gunman who shot and killed teen boy 0:45 Firefighter dies battling house fire in Laguna Niguel 0:22 Man riding scooter killed in hit-and-run crash