Crazy Man Bites Off the Head of a Pigeon [VIDEO]

So you're just minding your business and some random guy walks up and bites the head off of a pigeon, what do you do? See how these people react when it actually happens. Please be advised that this video is very graphic, so please proceed with caution. 

I would make my best guess that this is a health hazard, but I would also think that this would raise quite a few eye brows and voices in the animal rights world. Besides this guy, ho walks around and bites the head off of a pigeon? My guess is that there was some sort of dare or deal that went along with this.

After watching this video do you think authorities should keep a close eye on this man and will PETA and other animal rights groups speak out about this gruesome act?