I'm not actually defending the female killers, I'm just not allowing you to equate them with the much more dangerous killer George Zimmerman.
Zimmerman has an extensive history of violence, killed someone he didn't know and had no reason to fear (someone who had in fact tried to avoid him and was talking on a phone when Zimmerman accosted him), and has threatened to kill again. Neither Redmond nor Winkler has shown such a persistent propensity for violence and neither one has threatened anyone else.
All three are killers but only one of them is a violent thug who continues to be a threat to the general public.
Martin did not attack Zimmerman. He ran away from the confrontation as the physical evidence shows and witness testimony indicates, including Zimmerman's own recorded comments. Martin was
on his phone talking to a girl when Zimmerman accosted him, remember?
Martin had a right to defend himself, something you either don't want to acknowledge or don't believe, apparently because he was black. If Martin had been white teenager and the man with a gun chasing after him was black, you'd fully support Martin's right to defend himself and we all know it.
No, it's not because he was black. Also, from that megathread from 2012, remember that there were inconsistencies in the timeline. For one, it took Trayvon much longer than it should have to walk back to the house. It was raining, and the basketball game was about to resume, so why take extra while, instead of doing the opposite and actually hurrying up?
Z said that Trayvon looked like he was casing houses. What if he was taking that long because that's exactly what he was doing? That would fit with the whole burglary tools/mystery jewelry thing from Miami.
There are many possible reasons why he took his time, the most obvious of which is that he was enjoying his conversation with his friend.
Anyway, it doesn't matter. What matters is that a man with a criminal record and history of violence got out of his car with a gun to pursue him, he ran away, but the man caught up to him near his home and killed him. That man, a violent thug named George Zimmerman, continues to commit acts of violence and has threatened to kill again. Some people see that as a problem.