Here we have a video with some people looking at a panda in a zoo. Except this isn't a nice little cuddly panda. This panda is a seriously, I'm going to rip your throat out, rage blinded panda. The zoo visit in this video got to close to the panda cage and the panda grabbed him. The panda then proceeds to try and pull the guy into the panda cage. Other zoo visitors rush to help the guy. The video ends with the panda having mostly torn the guy's jean jacket off and pulled it into his cage. It looks like it happened somewhere in Asia and I would guess in China.
If you had to live in a cage in a zoo you would probably be pissed off too.