You'd be surprised how many people throw money to run these events if it's a chance to avoid corporations being there. We once went to a pride event where various fucking weapons manufacturers had sponsored it. We were so fucking disgusted. Even if it wasn't weapons manufacturers we still hate seeing them there, fuck rainbow capitalism, we don't go to pride to be advertised or marketed at.

Yes cops can be at pride but like you said only if they aren't appearing as cops, they must be off duty and not dressed as them and not be snitches at all. Remember pride was and is a riot against cops etc.