Huntington Beach police have arrested at least seven people on suspicion of involvement in a riot on Sunday, and are sifting through photos, videos and statements posted online to find more suspects. Many civilian members of the community are trying to help identify suspects. Kim Baldonado reports from Huntington Beach for NBC4 News at 11 p.m. on Sunday, July 29, 2013.
Tuesday, Jul 30, 2013 Updated at 12:38 PM PDT
A riot broke out in Huntington Beach on Sunday and citizens took to social media to help police identify people involved in the disturbance.
Concerned citizens used Twitter and Facebook to send photos of rioters -- including a stop sign-wielding man -- to police, hoping they could be identified.
The angry crowd assembled out on the ninth and final day of the Vans U.S. Open of Surf. Members of the crowd vandalized property and businesses, clashed with police, overtuned portable toilets and brawled with one another on the streets.