Hang around FR a while. There are plenty of right-wing fundamentalists who consider Catholicism a cult and the Pope a cult leader likely to whip out the Koolaid at a moment's notice.
Looney atheist Leftists consider all religions to be dangerous cults, with the most dangerous being fundamentalist Protestantism.
I have hung around FR a lot, although not as much as formerly now that I have my own blog. In general the comments denigrating religion come from aggressive atheists, not fundamentalist protestants, although I acknowledge that some protestants dislike Catholicism.