So you accept that the institutions remain, and that their existence keeps capitalism safe from a revolution.
If there was an actual revolution, the cops would do everything in their power to stop it, as they've shown time after time.
An institution that serves capitalist interests is terrible, but you can still hold the people who perpetuate that system accountable.
If you are a cop, and decide to protect capitalism against a revolution of the masses, you are a class traitor. That part is undebatable.
Cops, by the very nature of their role under capitalism, are class traitors. Even if they dont consciously make the choice, they are the enemies of the working class. Anything that creates a hurdle in the liberation of the working class is an enemy of the working class.