Another good reason to have a handy cam. If the’re distubing the peace - call the cops. If the protesters were standing on public or church property, the tape should be admissable as evidence of the noise making.
I’m not a leagal hound, there may be other things you need to do.
And have lots of long sticks with hooks on the end to pull their stupid headrags off in front of the camera. I thought hooded terrorists went out with the Klan. These scumballs are no different.