In every civilized society there's law and order. To keep law and order, the government of that society has to employ law enforcement.
I understand the origins of certain local law enforcement agencies in this country, but to flat out say that law enforcement itself exists only to enslave Black people is wrong. Us believing law enforcement = slavery, and law breakers = Black, is exactly the mentality the average racist WANTS us to keep. We're not going to win in the long run with this way of thinking. We would only be shooting ourselves in the foot.
What we need to do is continue fighting racism WITHIN law enforcement and the system, not attack it itself.