my research into the matter unearthed the following.. it is from a more reputable source than the general internet free for all and it is considerably different from the hysterical conspiracy-theory version

http://en.wikipedia.org/wiki/Margaret_Sanger

Eugenics and Euthanasia
Sanger was a proponent of eugenics, a social philosophy (now criticized as a pseudoscience) claiming that human hereditary traits can be improved through social intervention. Methods of social intervention (targeted at those seen as "genetically unfit") advocated by eugenists have included selective breeding, sterilization, and euthanasia. In 1932, for example, Sanger argued for:
A stern and rigid policy of sterilization and segregation to that grade of population whose progeny is already tainted or whose inheritance is such that objectionable traits may be transmitted to offspring.[4]
With advances in biology and genetics, it has become clear that the policies Sanger advocated to prevent the disabled from reproducing would in practice be ineffective.[citation needed] However, in the early 20th century, the eugenics movement, in which Sanger was prominently involved, gained strong support in the United States. As a result of the efforts of American eugenists, "eugenics practitioners coercively sterilized some 60,000 Americans, barred the marriage of thousands, forcibly segregated thousands in 'colonies,' and persecuted untold numbers in ways we are just learning."[5]
It has also been argued that the work of the American eugenics movement was directly responsible for the rise of the Nazi eugenics programs (such as the T-4 Euthanasia Program) and the Holocaust.[6] Edwin Black writes:
Eventually, America’s eugenic movement spread to Germany as well, where it caught the fascination of Adolf Hitler and the Nazi movement... in 1934 the Richmond Times-Dispatch quoted a prominent American eugenicist as saying, "The Germans are beating us at our own game." [6]
Hitler's attempts at creating a "Master Race" through eugenic policies were rooted in white supremacy, a concept associated with (but not synonymous with) eugenics in general. Sanger promoted the idea of "race hygiene" through negative eugenics, though her writings do not indicate that she believed that any particular (ethnic) race as a whole was more eugenic or dysgenic than any other, and she condemned the anti-Semitic Nazi program as "sad & horrible."[3] Black continues:
Where did Hitler develop his racist and anti-Semitic views? Certainly not from anything he read or heard from America. Hitler became a mad racist dictator based solely on his own inner monstrosity, with no assistance from anything written or spoken in English. But like many rabid racists ... Hitler preferred to legitimize his race hatred by medicalizing it, and wrapping it in a more palatable pseudoscientific facade – eugenics.[7]
Sanger saw birth control as a means to prevent "dysgenic" children from being born and living a disadvantaged life, and dismissed "positive eugenics" (which promoted greater fertility for the "fitter" upper classes) as impractical. While many leaders in the eugenics movement were calling for active euthanasia of the "unfit," Sanger did not share such views. Edwin Black writes:
In [William] Robinson's book, Eugenics, Marriage and Birth Control (Practical Eugenics), he advocated gassing the children of the unfit. In plain words, Robinson insisted: 'The best thing would be to gently chloroform these children or give them a dose of potassium cyanide.' Margaret Sanger was well aware that her fellow birth control advocates were promoting lethal chambers, but she herself rejected the idea completely. 'Nor do we believe,' wrote Sanger in Pivot of Civilization, 'that the community could or should send to the lethal chamber the defective progeny resulting from irresponsible and unintelligent breeding.'[8]