As Bodhi showed in the first thread on this topic, and as is explained also in detail at http://www.christianism.com, christoterrorism's own chosen name was christianism. So if christos call you "communalist" or whatever for referring to their religion by its own name (they are famous for being ignorant of their own religion), then just link to the appropriate page off http://www.christianism.com. Or alternatively, link to the page Bodhi referenced (in thread 1 I think) which explained how christianism was the cult's name.
(Now, if you called it christoterrorism I can imagine them whining. Although this is of course a factual representation of what the religion entails, its followers aren't known for appreciating facts.)
(Now, if you called it christoterrorism I can imagine them whining. Although this is of course a factual representation of what the religion entails, its followers aren't known for appreciating facts.)