The big media will always spin things the way they want to, this is why you should always take everything they say with at least a grain, if not a pound, of salt.
WRT the Zimmerman/Martin shooting, these are the facts:
1) The pictures the media has been showing of Trayvon Martin are from when he was 14. Trayvon Martin was a 6'3" 180# football player.
2) Eyewitnesses report that Martin was on top of Zimmerman beating on him with Zimmerman calling for help. The police report confirms that Zimmerman was bleeding from his face and the back of his head. There were also grass stains on his back, corroborating the eyewitness testimony.
3)The firearm used was a Kel-Tec PF-9. The PF-9 is a very small deep concealment, last resort firearm, not the type of gun one would generally ever intentionally start a gunfight with. Only one shot was fired, and the magazine was found full. (Either the gun failed to extract possibly due to limp-wristing while on the ground, or Martin's hand was on the firearm preventing it from cycling)
At this point we do not know for certain whether the facebook photos of Trayvon Martin claiming to be a gang member are the same Trayvon Martin or not, so I won't post it until we get confirmation.
Now, is Zimmerman a mall-ninja wanabe? Oh yeah. Did he put himself in an untenable situation? No doubt. Was this a bad shoot? Right now we don't have enough facts to know, but if a 6'3" guy had me on the ground and was beating on me, I'd probably shoot him too, regardless of whether he was white, black, or purple.