They're obvious fetishists and/or Furries
It hasnt been like that in 20 or more years. I dont think it is appropriate to parade around in crotch-less leather trousers while leading a man in a gimp suit around on all fours. Small children tend to become upset by such things and it's hard to explain this away to a 6 year old when they see if on the way to a visit to the British Museum
It's got nothing to do with being gay or not. for example, I dont walk around tesco doing my shopping in a gimp suit with a rubber ball in my mouth. Thats for tuesday and thursday evening only, behind closed doors.
I also fail to see why police officers, who are there on duty, should be dancing and joining in after getting their faces painted or why ever corporation looking to sell their wares to the gays need to be getting involved.
Most, the overwhelming majority of us, don't care if you are gay or not. It's your business but being gay does not excuse a person from maintaining some semblance of normal social conduct.