It really depends on where you are and what sort of Pride event it is. If it's a Pride march with lots of corporate sponsors, then you'll see very little kink, maybe someone in full rubber, but probably no jockstraps. If it's a ticketed gay village party, or a circuit party, you'll definitely see some more risque kink gear being worn. If you're at Folsom or in Berlin, there's whole parades dedicated to kink, but even the straight public know about that, so if they don't like it, they can avoid the area during those events.