You should treat cops like people who might shoot you without a good reason. You shouldn't look at them, you shouldn't talk to them
No, no and no. That minding only exist in America and it's honestly very dangerous. People shouldn't fear policemen (unless they have some reason to). No wonder violence is so high compared to the Western World. People will solve their issues with their own guns between each other instead of calling police.
Police should protect. Right now, police is making people afraid.
