gangster pulls gun on skateboarder; skateboarder disarms gunman and lays a beatdown.

[CtrlAltDefeat]

This strikes me as real... The way the guy with the gun won't let go of the the other guys shirt after the fight. I think blood would be hard to see in this video. Not to mention, it was blunt object strikes, where if the force was hard enough to draw blood, it would more then likely ooze slowly to the surface. I'm not an expert, but I find that people often expect real life events to be like the movies and TV.
E.G. Many people think blood always gushes; you can take many deep cuts and be able to fight, as long as no major organs are hit; gun blasts send people flying, and it's easy to shoot a person in the arm, or leg, or shoot the weapon out of their hand... Even if this was professionally done, it seems to lack the "theatrics" that are almost always detectable when a video is made for an audience... just imho