In the black “community” years ago, there was a rumor that the CIA was doctoring the food at Church’s Fried Chicken to render black men sterile. I kid you not.
I’m actually not surprised, as there was a similar case involving a Brooklyn-based soda manufacturer named Brooklyn Bottling. Someone started a rumor that the KKK was bottling the soda, and that it contained a chemical designed to sterilize black men.
http://www.snopes.com/racial/business/tropical.asp