How far this nation has slid, when a black mass is performed, unashamedly, in public. With the support of the public.
Actually, “Congress shall make no law respecting an establishment of religion or prohibiting the free exercise thereof.”
It seems to me that this is the applicable principle. The first amendment does not make exceptions for religions that the majority finds offensive. I am in no way supporting Satanism, but it does seem that the founding principles of America, which include free expression of religion, argue in favor of allowing a public black mass to occur (obviously assuming that it is conducted lawfully; no animal sacrifices, etc.).