““I’m fed up. It should not be a law that you get to murder because you’re uncomfortable.””
Yes, Zimmerman was “uncomfortable” getting his head bashed in on the pavement.
Trayvon was trying to make Zimmerman "comfortable". He tried to explain as gently as he could to Zimmerman, that Zimmerman was going to die. And he had him in a lying down position and was trying hard to make Zimmerman unconscious.