On July 30, 2015 the New York Times published ten videos, some taken by police cameras, some taken by bystanders, documenting recent interactions between citizens and police.   One has to wonder how much of this kind of violence has not been caught on camera.
Warning to readers: These videos include graphic scenes of violence.
Click on this link to the New York Times and then scroll down slowly to see each of the ten videos: http://goo.gl/JB7HmQ