I understand that the OP is being ironic but I think JWs are unique in that people think they're harmless. They come to the door or stand at the carts smartly dressed and have a respectable look about them.
People think they're nuts but harmless. They don't connect them with cults that break up families and use young people as cheap labour. Even with years of kids dying for lack of a blood transfusion or even recent child abuse news. This is the most dangerous thing about them, they seem so benign and I think that is probably unique for a cult.