If you want to know who the criminals are, just listen for the loud bass. Absence of common courtesy is apathy, and nobody with common courtesy would drive around trying their hardest to force their thumping into people's homes and vehicles, and such apathy is the hallmark of the criminal psyche.If you want to reduce crime in your city, enact STRICT noise ordinances regarding car and home audio equipment. When the cops go to those home or search those vehicles, they will find the meth cookers, crack dealers, small time burglars , rapists, and murderers in your community, and be more capable of taking them off of the streets.Loud Bass = Human Garbage.