Trump declined however to denounce QAnon, a movement that peddles a conspiracy theory that accuses Democrats of running pedophile rings and sees Trump as a secret savior.
Holzer faces up to 40 years in prison and a $250,000 fine when he is sentenced in January, prosecutors said.
Symbols on display at the march included the logo of the ultra-nationalist Azov Battalion and a banner that read “White Lives Matter.”
Hardy Lloyd, who has served repeated stints in prison, is a well known extremist in the Pittsburgh area.
Hardy Lloyd was sentenced to two years for inciting violence against Jews last year, but has now been released.
The Homeland Threat Assessment, released on Tuesday, details an array of violent domestic threats in the United States.
“Talking about this matters, and that is worth far more to me than $6 million in the bank from a globalist donor class.”
The bill authorized the creation of new offices and training within the Justice Department to tackle domestic terrorism.
The Proud Boys group is a far-right, “western chauvinist” fraternal organization. They were also name-checked by US President Donald Trump during the debate.
Multiple senior federal officials, including at the FBI and Department of Homeland Security this month have warned that white supremacist groups pose a rising threat of violence in the United States.