I'm going to an event soon and the last time I was there there were some of those awful street preachers with megaphones shouting bigotry. They're a nuisance and nobody wants them there, but it's a public festival and evidentially they're allowed to be there.
I tried looking online (
)and most of the advice was stupid lib shit, ranging from, "Call the cops and tell them they're violating statute blah blah blah" or, "Just ignore them, you can't change their minds and engaging just feeds their persecution complex." Obviously the cops do nothing, I don't care about changing their minds or what they think I just want to shut them up. But I also don't want to get arrested and if possible, it'd be nice to avoid disturbing the other people further.
Most likely, I'm just gonna have to endure it, but I thought I'd raise the question for brainstorming bc it feels like a common enough situation that other people will encounter it too. Best I can think is screaming something back at them 
UPDATE: I ended up just wearing a bunch of pride stuff and then they weren't even there lol
I mean, aside from just breaking their shins with a bat there isn't much. Iafaik they all think they know the law and wear cameras so they can sue or arrest anyone who tries to stop them.
They're fanatics who are fully convinced they're in a divinely mandated war against everyone else and tend to have nasty personalities on top of that. Shaming them or embarassing them can work something but it's not reliable.
If you've got someone who has absolute calm they could try to debate bro them to distract them.