Caught Live on Instagram: "February 2006 — Louisville, Kentucky. A Valley Traditional High School English teacher, Paul Dawson, sparked national outrage after calling a Black student a racial slur in class. Local TV ran wall-to-wall coverage, and Dawson’s on-camera interview went viral when he tried to argue a difference between “-er” and “-a,” saying students used the slang and that he’d said it himself — a defense that only made the clip more shocking. He was removed from the classroom and rea