One cell phone video shows Los Angeles police beating a man repeatedly in the face. Another shows a handcuffed, homeless man being blasted with pepper spray in the face.
A third grainy video has campus police using a Taser stun gun on a student who refused to leave a Los Angeles university library.
Once regarded as a toy for rich teens, the ubiquitous camera cell phone is becoming a powerful community tool in the debate about police conduct.
Some Los Angeles grass-roots groups are training citizens to use cameras, video cell phones and the speed and Internet sites like YouTube to get their voices, and pictures, heard.
"We urge everyone to have a camera on them at all times so if anything happens it can be documented. The concept of patrolling the police is something we are trying to push as a form of direct action," said Sherman Austin, a founder of Cop Watch L.A., which launched its Web site three months ago.
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