A federal lawsuit against the organizers of the deadly 2017 Unite the Right rally in Charlottesville, Virginia, which has rattled hate groups and white supremacist leaders, goes to trial this month. The suit already has helped to dismantle some of America’s most well-known white supremacist groups, and it has financially crippled one leader of the so-called “alt-right,” the white supremacist and nationalist movement that came to prominence under President Donald Trump.