This was shot today in Baltimore. The guy being assaulted himself assaulted two teenage girls. One of them was pregnant. That led to this fight (Or lack there of) with another passenger wailing of the suspect. In the background, you can see the operator watching it happen.
http://www.youtube.com/watch?v=DfBfCo_RWrI (http://www.youtube.com/watch?v=DfBfCo_RWrI)