These people are ridiculous. Anti-choice is really the best name for them, that is easy to say, however "shaming anti sex, anti woman" would be more accurate.
I live literally next door to a planned parenthood that gets these jerks protesting outside all the time. They don't care about anything other than shaming people who go in. They lurk around the perimeter, and take full advantage of their history of violence to scare the bejeezus out of clinic goers.
I take pictures of them whenever they are out there and post them up to a tumblr that mocks them. Engaging with them is totally futile. If they really wanted to reduce the number of abortions in this country, which is at an all time low, they would support birth control access, long term reversible birth control like an IUD, and increased factual sex education.
But that's not what this is about. It's about forcing a woman to take responsibility for her actions. See, a baby is a consequence of being a slut, a whore, or a floozy. It's not about the welfare of a child, or they'd be more into child charities for impoverished children. It's about attempting to enforce outdated ideas on sex and gender on women. It is a disingenuous crap movement that has a lot of violence in it's history, and they sure don't decry the violence done in the name of "pro-life".
As a side note, apparently silently documenting them and posting them online, and being open as to what kind of blog you post them on seems to reduce the number of protestors willing to show up. My local clinic has had a severe reduction in protestors since I started popping over for pictures every time they made an appearance.
Sorry this got long. It's a big issue to me.