After the 2020 presidential election, thousands of Donald Trump’s most fervent supporters heeded his call to join a “wild” protest of his defeat. Following Trump’s lies about a stolen election, hundreds of them stormed the U.S. Capitol under the banners of the Proud Boys, Oath Keepers and other extremist groups and movements.

Many of those far-right networks have dissolved, splintered or receded from public view since the Jan. 6, 2021, attack. But the specter of election-related chaos hasn’t vanished with them. Political violence remains a persistent threat heading into the Nov. 5 election, experts warn.

Election officials have been inundated with threats, misinformation and the prospect of ”election denialist ” organizations wreaking havoc. The FBI was investigating on Monday after fires destroyed hundreds of ballots inside drop boxes in Portland, Oregon, and in nearby Vancouver, Washington.

Trump has used social media to promote violent conspiracy theories that have become mainstream features of Republican politics. Many, including Trump himself, have tried to recast Capitol rioters as 1776-style patriots and political prisoners. Trump also has vowed to use the military to go after “enemies from within.”