Eugenics was a strongly held belief of Margaret Sanger, founder of today's Planned Parenthood.

Sanger had other strong negatives in her past, including speaking before KKK affiliated groups.

Real history is sometimes inconvenient, depending on your political point of view.

I'm not sure I'd describe the Carnegie Institution, or Rockefeller Foundation, who funded a lot of the eugenics research with the end in mind as notably liberal progressive. Nor could the Republicans Coolidge ("Nordics deteriorate when mixed with other races") and Hoover, who were both heavily in favour, be described as progressive liberals. Roosevelt was in favour too, of course.

It was a movement independent of politics, and especially popular in pre-war USA on both sides of the political divide.

HG Wells and a lot of the left leaning British intellectuals did and Sweden only stopped sterilising in the 1970's

Yes. I recommend "Illiberal Reformers: Race, Eugenics, and American Economics in the Progressive Era". An eye opening view about the "Progressives" who are so loved and idolized by the modern left or modern progressives.