I took a criminology class in college and the big takeaway was the supposed statistical correlation between race and crime - which, if study correctly - actually correlates to poverty and crime.
That seems to obvious to me, I'm always surprised that more people don't see it that way. I believe that most racism is really classism, and exists primarily in places where race and poverty correlate.
Not to say that actual racism doesn't exist; of course it does. But I think when most people think "I'd rather not be around 'those people'", if they thought about it they'd find that 'those people' are really defined by either their culture or economic status, rather than their race, and that their race is just a visually-obvious proxy.