Let's see what the vatican says about people who've been baptized into the catholic church:
7. It remains clear, in any event, that the sacramental bond of belonging to the Body of Christ that is the Church, conferred by the baptismal character, is an ontological and permanent bond which is not lost by reason of any act or fact of defection.From ACTUS FORMALIS DEFECTIONIS AB ECCLESIA CATHOLICA
This document, which discusses the process by which people can formally defect from the catholic church, clearly states that the church believes that one who has been baptized is always a catholic-no matter how badly they act as a catholic.
So those catholics who have been trying to foist off poor Hitler on the atheists don't know the rules of their own church.
Sorry Benny and Bill Donohue, but he's your problem to deal with.
Good luck with that.