"The area is clearly marked to keep traffic away as it was just re-painted to repair previous damage."
So which is it are we allowed to transit across it or not? Do the police regularly arrest anyone on a scooter that's in a sidewalk or a crosswalk that is not this one? Scooters typically aren't considered motor vehicles worthy of a road use but I don't know the specific laws.
I'm doing burnouts and intentionally leaving rubber marks on the roadway or other traffic ways is a crime in most places. Either a form of vandalism or mischief. I do wonder about the selective enforcement here but and nonetheless if they're doing it intentionally they should be cited.
The last thing that bothers me about this article is it appears that this is a group of kids young adults doing this. They are attributing their motivations to some sort of homophobia but I'm not sure where they have any evidence of that. When I read this I would attribute it to the most simple explanation which is kids being edgy and shitting on something other people like. You don't need homophobia to explain kids being kids.