"Take down the cops"
Is already more specific in a useful way. Look, not just a vague idea of "the enemy"! Now we can think about who they are, how society relates to them, and start coming up with realistic ideas for opposing them. Contrast this to, "this tactic works against enemies", lmao.
Though of course if you look at what I've written it's hardly just, "take down cops".
So you're suggesting we just shoot them all? Is that your idea of a not vague idea?
Shooting or jailing are the most likely outcomes for an opposing gang that must be overcome for us to be free. They're not going to just go away on their own without a fight. They are a violent arm of the ruling class and they will be increasingly funded and expanded as conditions degrade. Of course "shoot them" is not a plan and it was not offered as one. It is just a necessity given what they will be doing. You're not going to "infiltrate" them from the left, that is absurd. You will have to fight them.
We do need some sort of police force, always. As much as they suck, some people will always suck, and you need an enforcement measure to help prevent theft, rape, and murder and remove from society those who commit the latter two.
Policing as you know it was invented in the last 200 years or so, coinciding with the maturation of industrial capitalism. It is not some iron law of humanity, that is capitalist propaganda that regularly tries to equate its way of things with what is natural and the default despite only existing for a few hundred years of humanity's hundreds of thousands.
The idea that modern capitalist policing prevents theft, rape, and murder is similarly absurd and those occurrences do not correlate with a smaller number of police. The police prevent almost nothing, they are a reactive group that responds to calls (sometimes) and harasses people deemed violating private property interests in some way.
Finally, unless you are talking about summary executions by police in the field, cops don't remove anyone from society. That is left to the criminal punishment system: judges, juries, bailiffs, prisons.
Though all of this is neither here nor there. Cops right now are here to protect private property interests. They are the people enforcing evictions of the poor and marginalized, making people homeless. They harass the homeless for similar reasons, taking their possessions. They will increasingly be there to break your strike, harkening back to some of their origins. Protesting without a permit? Think again, have some jail time. Better not walk while black or the pigs are liable to find some excuse. They're not going to stop doing any of that because some confused liberals think they can reform their essential function by being paid to do cop things. Best case scenario, the cops will harass them relentlessly until they have to move and hide their identity. Cops already do that when one of them temporarily grows a conscience.