We are a nation of laws. The police have been anointed to enforce those laws and protect us from the Darkness of anarchy. Like all men, some are failable.

While 'Make my day' would apply should you be confronted, it does not should you go looking for miscreants. 

I don't know, nor do I wish to, what the police have done to you in the past, but it's obvious it was something bad. You seem to hold a grudge against them.