[over the mountain]

I need a ruling please.
If I see a vehicle with Steelers insignia on it, am I allowed to flick them off if I dont have any skins insignia on my vehicle? Im still deciding on what skins decal or magnet I want.
Obviously, if I have skins gear on my ride I have free reign on game day to harass the steelers vehicle any way I feel bc they will then see my skins insignia and know why.