>I get what you're saying, but blasting music on buses has been a thing since boom-boxes were invented, it's nothing new.

Yes, because people have always felt like outsiders in relation to society. My point was that this sort of public misbehaving is getting worse because social cohesion is getting even worse. Not everyone with grievances against society will respond this way, but as more people have grievances against society, more people will respond in a manner like this.