It looks to me like race matters more than class. Poor whites and hispanics don't commit nearly as much crime as black citizens, even though they are numerically greater. 6% of the US population (black males) commits 53% of the murder, more than the other 94% of the population combined.

There is something uniquely wrong in the black American community. Whites who notice it are called "racist". Blacks who notice it (like Bill Cosby) are called race-traitors or Uncle Toms. So nobody much cares about addressing anti-social behavior, because it simply cannot be discussed.