Am I actually allowed to sit on this park bench?

Police are bad. Bouncers absolutely unhinged. I've been turned away for not having nice enough shoes. I've had them think I was intoxicated after one drink. I've gotten verbal warnings for standing on things, while they let the people around me literally dance on them. They've knocked back student admission because my student ID card expired months ago. I recently got told off for drinking a beer while standing up.

And they act like if you dismiss these ridiculous things, they will immediately resort to violence.