Here are four things to know about the trial:

Several people have already been prosecuted for crimes related to the ‘Unite the Right’ rally.

The trial is the culmination of a flurry of prosecutions of lesser-known violent acts. At least six people have been tried and convicted of crimes associated with the rally.

In the brutal beating of a black man in a parking garage, which was captured on video, Jacob Goodwin of Arkansas and Alex Ramos of Georgia were sentenced to eight years and six years in prison, respectively. A third man, Daniel Borden of Ohio, has not yet been sentenced for the attack. The victim of that beating, DeAndre Harris of Charlottesville, was accused of assault in an earlier incident, but was acquitted.

The mayhem that day also featured a confrontation between a Ku Klux Klan leader who fired a gun in the general direction of a black man who lit the spray from an aerosol can on fire, creating a makeshift blow torch. No one was struck by the bullet, or hurt by the fire. But the K.K.K. leader, Richard W. Preston Jr. of Maryland, was sentenced to four years in prison for discharging a weapon in a school zone, while Corey Long of Culpeper, Va., was sentenced to 20 days in jail and 100 hours of community service for igniting the fire.

Image Mr. Fields faces a second, federal trial after this one ends. Credit... Albemarle-Charlottesville Regional Jail, via Associated Press

Christopher Cantwell, a New Hampshire man who argues that white people deserve a separate country, pleaded guilty to releasing pepper spray into a crowd. He spent 107 days in jail and was banned from re-entering Virginia for five years.