Hey! I am the one in favour of overthrowing tyrannies. You are the one applauding them for shooting protesters.
The point can be made that there is self-interest, realpolitik, and also preference and hypocrisy. However, it is not the cops that should be put in jail for that. It is still the criminals who deserve to be locked up. You are turning this upside down. By blaming the cops for not living up to their higher standards, you are blaming them for the behaviour of the criminals, confusing the cop with the crook.
See, if you get too cynical, if there is too little social trust, if everybody is on it for himself, then you end up with a society in which crimefighters are send to jail while mafia are allowed to roam free. And the reverse, where mafia rules, where there is no social trust, where perpetrators can present themselves as victims, there it is inconceivable that the common good, humanitarian ideals, equality are impulses of policy.
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