" OK, Weird and Mondo weren’t about to go out and beat up gay men for want of something better to do of an evening. But not everyone in Berlin had been part of Kristallnacht. And look where that had led. By sharing the same position of intolerance, you gave tacit support to the extremists. In order for evil to triumph, Alex remembered, it is necessary only that good men do nothing. "

― Val McDermid , The Distant Echo (Inspector Karen Pirie, #1)