Extremely loud music is a passive-aggressive assault. Im not saying its worth murder but my guess is the shooter had been pushed and pushed and pushed and the next thing made him snap. I used to live in a zero-lot-line neighborhood. The white kids next door would have their black friends over and theyd sit in the driveway with music so loud the base rattled the windows and doors and made things vibrate off shelves. I think they did it to annoy their parents (children of divorce) who the kids manipulated into fighting with each other. I spoke with dad and he was annoyed to the point of homicide but did nothing because any attempt he made to control her kids lead to an argument. One day I went over and stuck my face through the window into the kids face, millimeters away. He turned down the music and I asked, in my most deranged ready-to-kill voice, You gonna be here long? They shut it off and never did it again. I could hear them turn it off as they rounded the entrance corner from then on.
Note, I found out later that the kids all carried guns. The guns were a fashion accessory. Every one of them was on the high school basketball team. One day when my neighbors kids werent along, the leading black player, with his car full of kids, stopped to see somebody who owed him money for drugs. The guy told him to shove it and the kid pulled his gun and shot the guy dead for dissing him.
All the kids in the car went to prison as accomplices. (Florida law, I think.) I spoke with the neighbors kids about it and they said that he had to do it, cause the guy dissed him. But after that they were much better behaved.
Oh good grief.
Calling the police a couple times, after warning the kids, worked for me...no “ready to kill” act, just making their fun at others’ expense too much trouble.