It was just over a week ago that 100 members of the white nationalist group Patriot Front descended on Boston and marched along the city’s iconic Freedom Trail holding a banner reading “Reclaim America .” The group, which spearheaded two of the largest white supremacist rallies in the country last year, is described by the Southern Poverty Law Center as “one of the most prominent white supremacist groups in the United States,” and openly embraces Nazism. Boston Mayor Michelle Wu called the group’s march “disgusting.” She is right, of course, but it was also unsurprising. The Front boasts chapters in...