It is interesting, religion seems to be a crux factor for many of these mentally disturbed people, and some would suggest that were there no religion, that these people would be in a better state of mind. However, if you look at other cases of those suffering from paranoia or similar - many will seriously believe that they are being persued by government departments or aliens - essentially an athiest version of extreme religious beliefs - and suggests that even without religion, these people would act in the same way, but with a different blame. Thus religion is merely their 'cause du jour' and cannot really be singled out for blame for their condition. Afterall we do not suggest that governments be banned when hearing cases of people who think that 'The Men in Black' are coming for them.