Cell phone video led to murder charges against a S.C. police officer for the shooting death of an unarmed man. Eyewitness videos can be helpful, but they don't always result in criminal charges.
Daniel Sanchez is a community organizer with the Justice Committee. His group trains people on how to record potential police abuse in New York City.
SANCHEZ: I think witnessing police violence is extremely traumatic for a lot of individuals when they're witnessing it. I think sometimes they get caught off guard with it.
WANG: Sanchez says that's why he reminds trainees to jot down the date, time and location of the incident they're taping to get both the police officer and the potential victim in the frame. And if they're told to stop recording, to calmly state their constitutionally protected rights to film police on duty...