I was expecting the kids to be arrested. When you have 20 to 30 (yes!) teenagers riding around on their bikes, playing music and yelling and screaming, at 1:00 am, in the summer when everyones' windows are open, it would be helpful to just have the police do a drive by and tell the kids it may be a good time to go home.
It is called living in a community. We obviously don't live in a world where any of these kids parents care where their 15 year olds are in the middle of the night.