“make it harder for someone who starts a fight to end it with deadly force...”
1. Zimmerman didn’t start the fight. He called police to come get the guy.
2. Why would a guy armed with a gun start a fist fight?
Bingo ---
Outside of bar room drunken brawls and dope deals, the likelihood of that occurring is extremely remote.
“Why would a guy armed with a gun start a fist fight?”
That’s simple: to be able to argue self-defense after they murder them. This is what much of the internet, to say nothing of the saner parts of our society, believes happened, i.e. that Zimmerman deliberately either started the fight to shoot and lie about Martin starting it later or goaded Martin into starting the fight so that he could get the head wounds necessary to shoot him. The fact that there’s no evidence whatsoever for this theory doesn’t slow them down.