The best thing would be for all forms of media to ignore them, and not parade their hateful spectacle before the whole world, which is their lifeblood.
A friend of mine belongs to a patriotic motorcycle riders group. I am not sure of their name. However, one of their activities is to volunteer to escort military funerals (at family’s request). They surround the gravesite with a flag line, thus providing a physical and visual barrier in order to spare the family from having to see these ridiculous protesters.