The dude who threw the first punch had it coming. I don't care if they insulted your mother, just admitted they cornholed your girlfriend, or spaketh profain about your particular invisible man in the sky, the moment you put your hands on someone else for any reason that isn't self-defense, you have opened the gates of hell, you are now on your own, and if the other person turns out to be a more savvy fighter than you, then you deserve everything you've got coming, buddy.
Whenever you are reincarnated as a human being again, do yourself a favor, grow a thicker emotional skin, take some time to mature, if someone makes you mad just go for a walk or something, don't react with the first thing that comes to mind because more often than not it's gonna be something you regret later, if you LIVE to regret it later

.
Yep, all of this. And in my opinion, the police aren't excused from this little life mantra either - have the audacity to put your hands on a stranger uninvited, prepare to fight for your life.