Protesting The Mass

I may be mistaken --perhaps the law has been amended since-- but I think this kind of protest is not legal. When the FACE (Freedom of Access to Clinics) bill was passed "protecting" abortion clinics from Operation Rescue and creating "speech-free" zones outside of abortion clinics, there was an amendment tied to it that applied the same rules to houses of worship (this was in the days of ACT-UP, and pro-family forces got at least this bone thrown them in a bill that was otherwise a loss for them). If someone called the cops on the protesters, I believe they could be driven across the street by law.