If they are a cult, sect, I concur, partially. People should be allowed to.practice what they want, if it isn't illegal. With that being said, if it a religion, despite how odious it may be, it should be allowed to exist in a legal manner with the rest of society.

Now, if they can outlaw them knocking on the damned door to hand you those Bible tracts.. They are ninjas with those damned things, if they were Battlefield 4 tripmines, they'd be tactical geniuses