I guess the question then becomes should it raise a Red Flag? Yes the idea of "selectively breeding" humans is abhorrent, but it predates Nazism by a few thousand years through arranged marriages and religious doctrine. In more modern times eugenics is practiced (in part) by any country that sterilizes the feeble minded this includes most of the civilized world and many countries offer and even encourage parents to abort their pregnancy if the child is genetically "unfit". Isn't that Eugenics in a purer form? Make no mistake, what the Nazi's did was wrong, how they perverted the science was unforgivable
but at the core of the idea that natural selection can be tuned for the betterment of mankind is solid. How it is achieved, well that is the real debate isn't it?
That being said, I don't agree with how Ms. Nasreen worded that tweet, or the sentiment behind it. We as a people should stop attacking those that had no choice in there lot and instead encourage them to find ways to mitigate the genetic issues they inherited to give their future children a better life.