Well hell, look at all the people who admire Lincoln and Darwin. Being born in the 1800s and having at least a little racism was not exactly uncommon.
I wouldn’t call what Sanger preached “a little racism”. She wanted to stop “undesirables” from reproducing, and blacks were one of those she labeled as such. That’s just another form of genocide.
A “little racism” and a desire for genocide are a bit different.