If that is an accurate quote, I don't really see it calling for violence which is what people seem to be damning her for. Rather, it seems like that's what she's suggesting is that a certain segment of the population will never be convinced not to be racist because they've just been racist for too long. The only way for racism to die out in America, then, is for this segment of the population to die out as well.

A lot of American GIs coming back from WWII, Korea, and Vietnam developed a real and lasting hatred of all Asians. Nothing would change their mind because of their wartime experiences. The only thing that will change that feeling in American culture is when those men all die and nobody else carries such experiences with them.