Arn't those more cults than actual religions? I know there are people who use their belief to justify their actions and this could well be the case here, but I could be wrong. Someone who knows a lot more about religion than I do would be better to cover it.
What pisses me off about Atheism is that there are some, like SkinWalker, who are able to accept that others follow religion (that bit I have no problem with, in fact I'm exactly the same) where as some believe they have the right to monster people who follow religion out of their beliefs. They have no such rights, not only is such an idea morally wrong you do not want to see the day that such practices are accepted, because that's where problems begin and they end with Nazi Stormtroopers and death squads. People follow religion, those who cannot accept that have problems far greater than any number of people Atheists can convert from religion can solve.