There’s very little anti-black racism in the police forces. Not much different, in fact, proportionally than anti-white racism.
But to whatever extent it exists, it isn’t racism per se. It is more anti-criminal. If criminals proportionally are much more likely to be male than female, police officers are much more likely to suspect males of crimes than they will suspect females. That does not make the police misandrist or anti-male. If criminals proportionally are much more likely to be black than white, police officers are much more likely to suspect blacks of crimes than they will suspect whites. That does not make the police racist. If criminals proportionally are much more likely to be younger than older, police officers are much more likely to suspect young people of crimes than they will suspect older people. That does not make the police ageist or anti-young.