The nonpolitical abortion opponents.

The NYT writes:

"The media attention has all gone to the political wing," said James R. Kelly, a professor of sociology at Fordham University in New York who has written about the history of abortion in America. "But the first national organizations in the movement were not political; they were service groups that provided direct aid to women so they would not abort. These are low-key and hidden, but they were always there and had more volunteers than the political side."

The methods are rather deceptive:

... Woman's Choice is designed to look and feel like a medical center, not a religion-based organization with an agenda. Becky Edmondson, the executive director, said the center chose the look and name to reach women who were bombarded with pressures to abort and might think they had no other choice.

If callers ask how much the center charges to perform an abortion, Lisa Arnold, a counselor and leader of the postabortion group, said: "I say, 'It changes, but why don't you come in for an ultrasound and we'll talk about it.' You don't want to deceive them, but you want a chance to talk to them." Once women come to the center, staff members - who oppose abortion even in cases involving rape and incest - encourage them to make further appointments, and refer them to doctors who share the center's views on abortion.