Whenever science has been corrupted by falling prey to ideology, scientific progress suffers. This was the case in Nazi Germany, the Soviet Union—and in the U.S. in the 19th century when racist views dominated biology, and during the McCarthy era, when prominent scientists like Robert Oppenheimer were ostracized for their political views. To stem the slide, scientific leaders, scientific societies and senior academic administrators must publicly stand up not only for free speech in science, but for quality, independent of political doctrine and divorced from the demands of political factions. (Link courtesy Richard Dawkins)