Well, I think you aren't giving the whole story. Democrats passed a series of laws that destroyed the black family. (Well, it destroys the white families too, it's just been slower.)
In 1940, the divorce rate among black couples was lower than among white couples.
The important thing is that single mother households were the direct result of these laws, and single mother households increase Democrats being voted in. So, it helped the Democrats greatly, and Republicans just go along with it.
And the greatest protectors of abortion are a segment of white women.
And the greatest protectors of abortion are a segment of white women
add communism to that as well... especially older white “educated” women