I don't mean to troll, but there is nothing impressive about this video. What the KARATE MASTER did was the nerdy judo chop on that loser's neck. Which isn't anything spectacular. I think people are just making a big deal out of this because the bum was knocked out by a guy who is a martial artist with some notable amount of experience (I'm assuming he had to be well trained since he is teaching other guys). Personally, I think that loser could've been knocked out by any hit with some fair amount of force from anyone seeing as how he didn't appear to be coherent to begin with.

On a side note. NOBODY MESS WITH DARKSHADOW!!!!!!! SUPER MARTIAL ARTIST WITH A CLICHE, "SCARY" NAME