1980 was a turning point in American history. When the year began, it was still very much the 1970s, with Jimmy Carter in the White House, a sluggish economy marked by high inflation, and the disco still riding the airwaves. When it ended, Ronald Reagan won the presidency in a landslide, inaugurating a rightward turn in American politics and culture. We still feel the effects of this tectonic shift today, as even subsequent Democratic administrations...