A Statistical Summation

http://thosewhocansee.blogspot.com/2013/08/whence-afro-criminality.html

 

Amongst many other things: think twice before you accept a black, Hispanic, or foreign-educated medical doctor. They are generally less qualified.

Note also, the behavioral differences are well-attested. They tend to be demonstrable very early in life--before, for example, a black knows he's a black.