On this date in 1951, the first of two batches comprising the “Martinsville Seven” — black, all — went to the Virginia electric chair for gang-raping a white woman. (The remainder were executed on Feb. 5) Somewhat forgotten today, the Martinsville Seven were in their day the locus of radical activism against Jim Crow in the South — very much like Willie McGee, who was put to death in Louisiana later that same year. In fact, this case generated a bit of a legal milestone: a month before the executions began, the U.S. Supreme Court declined an appeal seeking relief...