In a way. I don’t believe Sanger or Planned Parenthood actually supported abortion in her lifetime. But she did talk about using birth control and sterilization to limit the growth of black population, and she said it in a very insulting way.
You are correct.
The last forced State sterilization happened in 1977. I’ve often wondered if this was because abortion was legal by that time and the doctors made more money from the abortions.