Video: NYPD clocks, bloodies, HIV positive OccupyWallStreet protester

There appears to be no reason for this police officer to punch this protester in the face.  As you can see clearly from the video, the guy is simply walking away from the cop and another cop is approaching the protester from the other direction - it's really not that hard to simply grab the guy if he did something wrong.  But flat out clocking the guy in the face when all he's doing is walking away?  And, we now learn, the protester is HIV+ and the cop ripped his earring out, causing a good deal of blood to go flying.  The protester is now saying the cop needs to be tested for HIV.

Amazing.

JoeMyGod has the video, and here are some screen shots of the cop going after the guy.