I think it would be wise for people to get this idea out of their head that cops are essentially good guys.
Quite the opposite in my opinion. The majority of cops, are basically criminals. It takes one to catch one and they are 2 sides of the same coin, except one has a badge, a weapon, a radio and backup.
This makes cops much more dangerous than your run of the mill criminal or even gang member.
Avoid putting yourself into bad situations if you can.
You would not put yourself in the middle of a drug deal, so why would you want to ever be in an encounter with the police?
If you are in an encounter, it would be wise to be polite, follow instructions exactly, and pose no threat to them.
Your odds of coming out the other side are much better this way.
See, if everyone actually thought of the police in this way, you wouldn't all be freaking out over the stuff that is happening. The only reason people are freaking out is because they believe the lie about the police being there to serve and protect.
Unless you are a politician, they are not there to serve or protect you.