"Any Aroused Group was a Good Group, and Therefore I Accepted an Invitation to Talk to the Women’s Branch of the Ku Klux Klan at Silver Lake, New Jersey”

Any "aroused" group was a good group..... terrific choice of words, Margaret.

Who knew the KKK had a women's auxiliary?
And who knew it had a branch in Silver Lake?

And who knew Margaret Sanger, the Mother of Planned Parenthood and the House Majority Whip had so much in common?

why would the KKK be so interested in Ms. Sanger? The reasons are obvious, a natural fit.
Sanger was a passionate racial-eugenicist with a crowning vision for what she openly called “race improvement.” The Planned Parenthood founder lamented America’s “race of degenerates.” The nation’s landscape needed to be purged of its “human weeds” and “the dead weight of human waste.” This included the “feeble-minded,” the “insane,” and the just plain “idiots.” Sanger shared the disparaging view of humanity held by another progressive icon, Supreme Court Justice Oliver Wendell Holmes, who declared that “Three generations of imbeciles are enough.” Like Holmes, and, for that matter, like Adolf Hitler—who was an obviously more aggressive racial-eugenicist—Sanger hoped to finesse and refine the “gene pool.” She would do so not with gas chambers and concentration camps but with birth-control pills, eliminating human life before conception rather than after birth. Thus, her Planned Parenthood, which was originally called the American Birth Control League.
One of Sanger’s favorite slogans, so much so that it adorned the masthead of her Birth Control Review, was this: “Birth Control: To Create a Race of Thoroughbreds.”
In this Sangerian vision, blacks were singled out.
Progressives today dare not raise the alarming specter of Sanger’s “Negro Project,” or her correspondence with Dr. Clarence Gamble, one of her Negro Project collaborators. In a remarkable December 10, 1939 letter today held in the Sanger archives at Smith College (I have a photocopy), Sanger urged Gamble: “We do not want word to go out that we want to exterminate the Negro population.”