What would be different if there was no police

[Tellos Athenaios]

It's quite easy to see; which does the government come down hardest on - private companies or other government agencies?

Why did Fannie Mae and Freddie Mac escape the regulations put on the private financial industry? Why is Blackwater investigated for killing people but prosecuting attorneys can lie, hide exculpatory evidence, etc., and not be punished? If my statement is incorrect, why do police officers get away with things that private security officers would be thrown in jail for decades for?

CR

On the other hand which man with a gun is subject to proper Congressional oversight and scrutiny if Congress wants to: the soldier in the US Army, or the private contractor from Blackwater that Congress doesn't even know about unless it asks persisently? Hint it's not the Blackwater guy, he's just some random employee of some private company Congress can not exert direct influence on.

EDIT: What the USA would benefit from here is clearly a more centralised approach towards how police and attorneys are organised. This way the problem of accountability is solved more easily because it is clear who is responsible for what and it is possible to suspend or substitute a failing part in the chain more easily. But that requires cutting on the cherished state rights.