While anger continues to mount around much of the nation regarding police killings in Ferguson, MO, Cleveland, OH and New York City, one of the things many have been calling for are police body cameras. These cameras are small wearable devices that can provide more context to investigations of police incidents, and perhaps (some suggest) dissuade a rouge officer from using excessive force. At the national level the President has already called for them, and now the Mayor and Houston police chief are looking at ways to get them on all Houston Police officers. (Video: KHOU 11 News)