OT, Damn, you all talk tough as hell on the internet. I'm e-scared.
Stupid move, she should dump your ass and you will probably have even more problems now that they know where you live and that you're a douche bag.
I feel like you're not telling the whole story, I'm gonna go out on a limb and say you instigated this. I could see your actions as being a threat to fight to a drunk person.
Let's say hypothetically you are telling the truth, and they did scream obscenities at you for no reason, look at it from their POV, you immediately park your car and pop your trunk, I know in MY neck of So Cal, if someone yells something at you and you pull over and get out of the car, you're probably looking for a fight. That's cool, you wanted it obviously, but don't get all fucking butt hurt when you get what you asked for.
If I see a group of people that look shady, ANYWHERE, the mall, my house, my friend's street, I DON'T park. Especially if I know the people are DRUNK, and leaving a party, and ESPECIALLY if they just yelled something at me. You're asking to get jumped, robbed, car stolen, shot, etc. Drive around the block.