Stalker's opinion, which he shares with many people, is that abortion is terrible horrible awful and tantamount to murder. That is not, however, the law.
Stalker appears to be extremely intolerant of those who do not share his opinions, on this and many other issues. When confronted with disagreement, he quickly deteriorates into a foul tirade, calling those who express opinions differing from his own liars and all sorts of other nasty names.
This is not new. Abortion opponents tend to be extremely intolerant of opposing points of view. You usually can't even have a rational discussion with them. That's generally the case when it's science vs. belief.