Seven years after a white nationalist rally erupted in violence in Charlottesville, Virginia, a trial began Tuesday for one of about a dozen people charged with using flaming torches to intimidate counterprotesters. Prosecutors at the trial of Jacob Joseph Dix showed the jury graphic videos of 300 to 400 white nationalists marching through the campus of the University of Virginia, carrying torches, shouting Nazi slogans and surrounding a much smaller group of anti-racist counterprotesters, an event that ended in chaos and fighting between the two groups. But Dix’s lawyer, Peter Frazier, told the jury nothing Dix did the night of...