(Chip Somodevilla/Pool via AP)WASHINGTON – FBI Director Chris Wray told lawmakers Thursday that antifa is an ideology, not an organization, delivering testimony that puts him at odds with President Donald Trump, who has said he would designate it a terror group. Hours after the hearing, Trump took to Twitter to chastise his FBI director for his statements on antifa and on Russian election interference, two themes that dominated a congressional hearing on threats to the American homeland. Trump tweeted that the U.S. would be designating antifa as a terrorist organization, even though such designations are historically reserved for foreign groups and antifa lacks the hierarchical structure of formal organizations. The FBI director said racially motivated violent extremists, such as white supremacists, have been responsible for the most lethal attacks in the U.S. in recent years. He responded on that front Thursday evening, tweeting: “But Chris, you don’t see any activity from China, even though it is a FAR greater threat than Russia, Russia, Russia.

Here's a closer look at Antifa protesters, who have become more visible in the last several years. The majority of Antifa members don't fall into a stereotype. Since the election of President Trump, however, most new Antifa members are young voters. White nationalists and other members of the so-called alt-right have denounced members of Antifa, sometimes calling them the "alt-left." Many white nationalists from the Charlottesville rallies claimed it was the Antifa groups that led the protests to turn violent.

CNN VideoNEW YORK - Two members of the Proud Boys have been convicted on multiple charges for assaulting members of Antifa during a fight last year. The fight ensued after a group of Proud Boys members left an event at the Metropolitan Republican Club. The Antifa protesters were directed away from the venue by police but then intercepted the group of Proud Boys. Hare and Kinsman were part of a group of Proud Boys members who attacked the Antifa members, the district attorney's office said. Antifa and the Proud Boys were part of dueling demonstrations in Portland, Oregon, Saturday that resulted in 13 arrests and six injuries.

Copyright 2019 CNNPORTLAND, Ore. - President Donald Trump on Saturday called for Antifa to be a designated an "organization of domestic terror," as the left-wing anti-fascist demonstrators were expected to show up in Portland, Oregon, to counterprotest a gathering of far-right and extremist groups. "Major consideration is being given to naming ANTIFA an 'ORGANIZATION OF TERROR,'" the President wrote in a tweet. Trump's tweet came after days of Portland authorities condemning hate and warning residents to stay home as far-right groups planned a rally aimed at putting an "end to domestic terrorism," with a particular focus on Antifa extremist groups. There were fears the rally would attract both a smattering of right-wing extremists and Antifa counterdemonstrators, in turn prompting violent clashes like those the city has repeatedly seen in recent years. The Oath Keepers, an anti-government group associated with the militia movement, said in a statement on its website it would not attend the event as a group but would continue to oppose Antifa.