The former leader of a Philadelphia chapter of the neo-fascist gang the Proud Boys who stormed the halls of Congress on January 6 has been sentenced to 15 years in prison.

Zachary Rehl, the son and grandson of Philadelphia police officers who used pepper spray against law enforcement outside the US Capitol then lied on the witness stand about it, had called for “firing squads” for “traitors” who wanted to “steal” the 2020 election from Donald Trump.

He was convicted of seditious conspiracy earlier this year alongside three other members and allies of the group for their roles in an assault that federal prosecutors said “unleashed a force on the Capitol that was calculated to exert their political will on elected officials by force” to “undo the results of a democratic election.”

US District Judge Timothy Kelly determined that Rehl committed perjury during the trial when he denied assaulting anyone. Video evidence appeared to show him using a chemical spray against police as the mob broke through barricades and marched to the Capitol.

Rehl’s sentence is among the largest against defendants connected to the attack on the US Capitol during a joint session of Congress as lawmakers convened to certify election results.