In “Documenting Hate: Charlottesville,” Frontline and ProPublica investigate the white supremacists and neo-Nazis involved in the 2017 Charlottesville Unite the Right rally. Our joint reporting has already shed new and troubling light on the events of Aug. 11 and 12, 2017 — revealing that one participant in the violence, Vasillios Pistolis, was an active-duty Marine, and that another, Michael Miselis, worked for a major defense contractor and held a U.S. government security clearance. Now, correspondent A.C. Thompson goes even deeper, showing how some of those behind the racist violence nearly one year ago went unpunished and continued to operate around the country. This is the first in a series of two “Documenting Hate” films from Frontline and ProPublica, with the second coming later this fall.

Tune into the premiere on PBS on Aug. 7 at 10 p.m. Eastern, 9 p.m. Central and online at pbs.org/frontline.