The fault is simple - when dealing with a person, treat them for what they are, not for what your own preconceived notions tell you. Even statistically justifie

The fault is simple - when dealing with a person, treat them for what they are, not for what your own preconceived notions tell you. Even statistically justified prejudices are unfair. Statistically some ethnic groups are more likely to have a criminal record. Don't just assume - go ahead and check. Is it more effort? Yes. That's why we call it "the right thing to do" and not "the convenient thing to do".