The best solution would be to ignore them completely and call the police on them for disrupting the peace. They would be forced to leave.
But, that's no fun! *ominous snicker* You want to shove their own message right up their assholes, right?
I'd suggest a sign that can put their own message against them. I don't have one in mind, but this is a suggestion of what you should prioritize.
EDIT; On second thought, since they are acting like 8 year old kids that won't shut up, you'd ought to argue back like an 8 year old kid, but plan ahead.
This is the only way to argue with them. Do something extremely immature like they do.
But, that's no fun! *ominous snicker* You want to shove their own message right up their assholes, right?
I'd suggest a sign that can put their own message against them. I don't have one in mind, but this is a suggestion of what you should prioritize.
EDIT; On second thought, since they are acting like 8 year old kids that won't shut up, you'd ought to argue back like an 8 year old kid, but plan ahead.
This is the only way to argue with them. Do something extremely immature like they do.