THIS IS WHY WE WAIT FOR BACKUP

Complaints have come in that there was a police car at the end of the block when the Fenger incident occurred. Over at Second City Cop they are covering that allegation on a post.
As SCC points out, "And a single 10-99 unit isn't going to stop a riot, or many "mini-melees" which is what we see on the tape. All you can do is call for back up and wait for the cavalry to fly in."
The officer in Missouri is lucky bigger people and more of them didn't get at him before his back up arrived.
Thanks Fox News Network for showing what most media won't.