The Satanic Temple isn't satanic, check them out. They exist to make a point, often that allowing any religious group to use facilities means you have to allow all.

In this case I'm using theocrat to describe someone who believes the U.S. should have an official religion. (In your case, you seem to be saying the 1st Amendment and religious liberty only apply to Christians.)

I use Christianist for extremist Christianity in the same way people use Islamist to describe extremist Islam.