In Southern California — an unauthorized street party ended in chaos.
The so-called “deltopia” gathering in Isla Vista drew huge crowds that apparently got out of control. Hundreds of police officers were brought in to contain the violence.
Police say two people in the crowd were treated for stabbing injuries.
Authorities say two officers were injured by thrown objects — a bottle and a brick.
There were reports of widespread vandalism, including street signs torn down, small fires and at least one vehicle smashed by revelers.