Officer Are Police Officers Given A Discrimate Test Before Becoming A Officer Of The People?

Are police officers given a discrimate test before becoming a officer of the people? - officer

I wondered, dass I live in a small town police here are very racist. They say they're not, but they are. If one is riding vehicle mistake you will get very fast. Why is there no evidence of how a person discrimate before it to prove a police officer?