We know Zimmerman will kill again

And probably get away with it again. He was a cold-blooder killer to begin with and letting him off only reinforced to him that he's immune to prosecution should he do it again. See this story. Zimmerman and a buddy pulled up to a guy at a stop light and threatened him for no reason, saying: "Do you know who I am? I'll fucking kill you." The victim reported it but out of fear declined to press charges. A couple days later Zimmerman showed up where the victim works and the victim reported that as well, this time police verifying that Zimmerman was there. But again the victim was afraid to press charges. Again no surprise, since Zimmerman is convinced he can get away with murder since he already has. And give Florida's stand-your-ground laws, he most likely could.