I have not seen the tape you mentioned Zimmerman was looking for a fight so if the kid wasn't shot in the back he probably was going to fight.
Both ways look like murder to me you don't shoot an unarmed man no matter what race you are. Unless they are a rat than shoot that piece of shit.
Only reason people make a huge deal about Zimmerman is because it's a white guy killing a black guy you don't hear shit about that white guy who was clearly murdered and the murderer let off.
Sure Zimmerman went full retard trying to sell the murder weapon but black people get away with murder too.