It is a common and observable dynamic, most obvious in metro areas, that the police, who get credit for a stop no matter who they stop, will seek out meek white people and turn a blind eye to criminal minorities just feet away from them.
Why? They want to further their careers but they are afraid of getting hurt.
The best way to stay alive is to avoid minorities, in their view, because they know that minorities are more likely to fight, pull a gun, or flee.
Thus they target white people.
Not the ones I know.