Whether you are religious or not, or believe in the existence of the leaders of these religions or not, or believe that there is corruption within the human organizations that run some of these religions or not; the country was founded on values that are consistent with those espoused by "real" religions (oh yes I did), and inconsistent with values tied to the concept of "Satan".
So I'm sorry, but: Satanists, shut up.
At some point, the common values of 98% of people do matter, even while protecting a reasonable freedom of anyone who wants to identify as a minority in some aspect of life. You DO draw a line at hate and violence, for example, regardless that a small minority wants to spread that. Their freedom stops when it goes against the most fundamental rights of everyone else.