"Margaret Sanger, who passionately believed in a woman's right to control her body, never "promoted" abortion because it was illegal and dangerous throughout her lifetime. "
I think if Margaret had ever changed her mind on abortion and openly condoned or promoted abortion, Planned Parenthood would have been very happy to publicize that fact. PP cannot do so because there is no proof she ever condoned or supported the practice abortion or changed her mind in later years. If she did, she never wrote or spoke about it, much to Planned Parenthood's dismay I suspect.