I can’t think of a better term to describe these people other than satanists (with a small “s”).  I don’t want to insult those friends of mine who are Satanists (with a capital “S”) because they’re good people, but I can’t think of a better term.

A satanist (once again, note the small “s”) is someone who is on the side of hate, suffering, pain, authority, power, the enforcement of order onto natural chaos, and all else that evil entails.

While they may protest to the contrary, the congregation of Westboro Baptist Church are satanists.  So are most Christians and Muslims.