Police say they're working around the clock to find an attacker who stabbed to death a retired administrator at California State University, Fullerton on the first day of the new school year
A judge has ordered deliberations to start over in the trial of two men accused of turning a San Francisco Bay Area warehouse into a cluttered maze where 36 partygoers died during a fire
Twitter has suspended more than 200,000 accounts that it believes were linked to the Chinese government and a disinformation campaign targeting protests in Hong Kong
Hong Kong leader Carrie Lam says she's setting up a "communication platform" to resolve differences in the city after months of anti-government protests
Texas' governor is bringing in Google, Facebook and Twitter for a meeting on extremism in the wake of a mass shooting in El Paso that left 22 people dead
A school district in Southern California condemned a video of high-schoolers giving Nazi salutes and singing a Nazi song after it was released Monday.