Clergy observe a moment of silence for Heather Heyer outside the Paramount Theater in Charlottesville on Aug. 16.

Heyer was among the hundreds of protesters who had gathered Saturday in Charlottesville to decry what was believed to be the largest gathering of white supremacists in a decade — including neo-Nazis, skinheads and Ku Klux Klan members. They descended on the city for a rally prompted by the city's decision to remove a Confederate monument.