Yesterday, a video was uploaded to YouTube of Ferguson protests in the wake of Michael Brown's killing.

It shows a police officer prowling the street among dozens of protesters milling about. He has a rifle, and has it raised and aimed at peaceful civilians. The money shot comes about 30 seconds in, when he points the gun directly at multiple people and says, "I will f*cking kill you. Get back!"

The person recording the video then asks the officer for his name. "Go f*ck yourself," he replies.