Is "they" the Scientologists? What is it about this "religious" group? They tend to have their propaganda stores near our universities and colleges.
Oh, the Scientologists are in fact a threat. Not on the level with Islamism, but that is ony because they are few and weak. Give them some time. They have one basic tenet which makes them rather like the islamotards, in fact - the Doctrine of Fair Game. Basically, this says that anyone they deem an enemy - and that can be literally anything, including other Scientologists - is Fair Game. Fair Game can (and should) be lied to or about, attacked, destroyed or killed.
Not long ago, Microsoft had to rip out parts of their software in order to be allowed to sell Windows in Germany. One of the subcontractors, who makes the low-level disk verification routines, is a Church of Scientology subsidiary.