I propose an amazingly simple amendment to Florida's "Stand Your Ground" law. Everyone learned it in grade school or with your siblings: It is simply called 'You Started it". If you start some shit, and there is clear evidence that you did (like a call to a 911 dispatcher who tells you to back the fuck off and let the cops deal with it but you go all mercenary anyway), then everything that happens from that moment forward is your fault. You start a fight with someone and kill them? Jail for life.
Actually, fuck that, death sentence.
This law is so utterly brilliant in its simplicity that it should be used on a national level.
If your momma didn't teach you not to start fights (especially ones you can't handle), you deserve a long time in a cell or worse.