text: Christianity may well  be (or intend to be) fundamentally peaceful  but various off shoots are not.  Radical Christian extremists find homes in outfits like the Christian Identity movement and The Army of God and so on. 
  Are you saying because there is no group called RCE , the people who organize themselves with RCE precepts don't exist?
  Or merely that they cannot be Christians because their ideals are opposite of the larger notions of Christianity ? Like the Muslims who have been saying for years and years that the radical Islamic extremists are not true Muslims?
   I think all these folks need to be owned by the larger religious umbrella they shelter under and booted out on their fannies as sick phonies-  Christian, Jew, Muslim,etc.  It is inadequate to the problem to just keep saying they aren't Christian. Owning that religion can be perverted is an important step  which is missing in the larger Christian community- at least in public.