The annual parade of pro-lifers is a beautiful spectacle to behold, and from 1974 to today they have come and walked, in the tens of thousands, mostly female, mostly young, from the Mall to the Supreme Court building, despite snowstorms and bone-chilling winds.

But what does the movement seeking to save millions of babies from the dismemberment of the suction machine, or the acidy incineration of saline injection, make most people think of?