Unfortunately they probably have a right to be there spewing as long as they don't get physical. Phelps and his ilk had to be allowed a space for protest at the funeral of Matthew Shephard in WY. They were contained in a small area which the cops set up for them. The caring crowds of people ignored them, some had signs of their own which they held up but would not engage in a screaming match with the bigots. Mother Nature really put a damper on it with a sudden influx of low-hanging, heavy snow clouds which let loose and ran them off. I would call the city or county attorney for starters or the state attorney general's office.