It is a Federal Offense to interfere with a Christian Service. If his folks become disruptive in any shape, then they can be arrested.
This is from the FACE Act. The Conservatives put in the religious provision after the liberals demanded criminalizing obstructing the entrance to an abortion clinic.
It is a pretty severe penalties for violating this act.
If the Rev. Phelps wishes to disrupt the funeral service, then it is time for citizens arrest for him and his followers. THERE MAY BE OTHER GROUNDS FOR ARREST AS WELL.
I know a more immediate demonstration of opprobrium would be infinitely more satisfying viscerally, but doing it the legal route would be far more effective...
Hope this will be done...maybe it will make him leave our heroes alone!!