Planned Parenthood has roots in the eugenics movement.
However it no longer bases its reasoning on the goals of eugenics (which is pretty much a dead movement).
Organizations outlive their members and shift their reasonings and goals to attach to current concerns and philosophies.
Anyone who's ever watched the two main political parties in this nation or any religion should be able to grasp that.

__________________
"Man lives in the sunlit world of that which he believes to be reality. But unseen by most is an underworld, a place that is just as real... but not as brightly lit... A DARK SIDE!"
-opening from Tales From the Darkside