Protesting Sanger with regard to eugenics is fine, but be prepared to criticize everyone else who supported it, too.
The number of people and groups who supported eugenics back in the day might surprise you. Thirty states had pro-eugenics laws on the books.
Winston Churchill & Theodore Roosevelt were both supporters.
http://m.ncregister.com/blog/matthew-archbold/7-beloved-famous-people-who-were-wildly-pro-eugenics#.VeKNv1nnbqA
WEB Du Bois, co-founder of the NAACP and the NAACP both supported eugenics, too.
https://en.m.wikipedia.org/wiki/Eugenics_in_the_United_States
It’s not about supporting eugenics, it’s the reasons behind it.
Eugenics just argues that desirable traits can be bred into humans and undesirable traits can be bred out of them. It’s not controversial, we do it with other species all the time and when the theory was first proposed it made a lot of sense to a lot of people.
Of course the morality behind such schemes was a side issue then and for a lot of people, it just gave a thinly veiled excuse of support to their preexisting white supremacist views.
Now we know that while it may be beneficial if people with certain genetic diseases don’t reproduce, identifying and educating such people so that they can make the best reproductive decisions for themselves is best.
And no I’m not talking about abortion. But if a new couple finds out before pregnancy that they both carry recessive genes for some terrible condition, they might make the decision to adopt instead.