The entire purpose of Religion, Doctrine and Theology is to convince, either through persuasion or outright naked force that a particular belief is the Truth to be followed by all others and to the benefit of those who invented the concepts Religion, Doctrine and Theology.  "Perversion" or "Bringing the masses to Jesus"; depends on the time.  The Conquistadores were charged with taking Jesus to the Americas.  The Baptists, the LDS, and many other proselytizing Christian faiths are doing the same as we speak.   They don't get to use armed force today, they use other tricks instead.  

Faith, I think is a different matter.  It appears, at least, to be honest.  The other three, not so much.  

The 1.27 billion Catholics, members of  the largest church in the world, would certainly be interested to learn that they are not Christians.  

All those crucifixes,  all those Pietas, all those "Saints" relics, all those cathedrals, the invention of the Inquisition to 'purify' the True Faith?