Bernard Nathanson, was the principal abortionist which secured the victory of the infamous Roe v. Wade in the U.S.
He converted to Catholicism many years ago.
In addition to admitting to the strategy of lying about the number of “back alley abortions” to persuade the American Public, this is what else he admits to doing:
The Second Key Tactic was to Play the Catholic Card
We systematically vilified the Catholic Church and its “socially backward ideas” and picked on the Catholic hierarchy as the villain in opposing abortion. This theme was played endlessly. We fed the media such lies as “we all know that opposition to abortion comes from the hierarchy and not from most Catholics” and “Polls prove time and again that most Catholics want abortion law reform.” And the media drum-fired all this into the American people, persuading them that anyone opposing permissive abortion must be under the influence of the Catholic hierarchy and that Catholics in favour of abortion are enlightened and forward-looking. An inference of this tactic was that there were no non-Catholic groups opposing abortion. The fact that other Christian as well as non-Christian religions were (and still are) monolithically opposed to abortion was constantly suppressed, along with pro-life atheists “opinions.” (Source)