Before the fatal shootings of three Black residents in Jacksonville, Florida, over the weekend, the gunman, a young white man with swastikas painted on his rifle, pulled into a parking lot at Edward Waters University and began putting on tactical gear. Students reported him, a campus police officer approached and he sped off in his vehicle having never identified himself. The shootings dredged up memories of another infamous racist attack in the city nearly 60 years ago known as Ax Handle Saturday. In that incident, a mob of Ku Klux Klan members armed with ax handles chased and beat 17-year-old...