One of them is Heather Booth. When she was 20 and a student in Chicago, a male friend asked if she could help his sister obtain an abortion. It was 1965, and through contacts in the civil rights movement, she found a way to connect the young woman, nearly suicidal at the prospect of being pregnant, to a doctor willing to help. She thought it would be a one-off, but Booth ended up co-founding the Jane Collective, an underground group of women who provided safe abortions to those in need. In all, the group performed some 11,000 abortions over about seven years — a story recounted in the new documentary “The Janes.”