time and again

"It's important to be aware of how easily - even in a highly industrialized, civilized and prosperous middle-class society - that hatred and fear, properly whipped up, can lead to persecution and indeed mass murder."

World War II resistance fighers in Holland and others like them "serve as an example for us of how to respond toward an assault on individual human beings as well as on human dignity in general, even when it would be more comfortable and even when virtually all political, social and psychological pressures would advise us as individuals to become bystanders."

-- Peter Black, senior historian at the U.S. Holocaust Memorial Museum in Washington, D.C., as quoted in The Salt Lake Tribune