Thousands of President Trump's supporters were out in Washington, D.C., on Saturday for a day of rallying to echo the false assertion that the 2020 presidential election was marked by fraud.

Trump supporters, including families with children, as well as fringe groups, such as white nationalists, are gathering in DC for the "Million MAGA March."

Groups supporting President Trump plan to converge on Washington DC today for a rally billed as the "Million MAGA March." It's unclear how many people will actually turn out.

Activists pushing baseless claims about a "stolen" election mobilized in several cities in response to President-elect Joe Biden's victory.

Domestic terrorism analysts say that the drawn-out vote count and fiery rhetoric from the White House are inflaming tensions.

In the lead-up to the election, there were warnings about the wild card of armed militia-type groups. Analysts say potential vigilante violence remains a threat as the vote count continues.

The election season's spotlight on the militia threat is glaring for Eric Parker. Federal authorities consider him a domestic extremist. That hasn't stopped his run for the Idaho Legislature.

A slew of arrests in the alleged plot to kidnap the governor of Michigan sends a message to other armed groups agitating for political violence: You are being watched.

Michigan Governor Gretchen Whitmer says two militia groups "were preparing to kidnap and possibly kill me." Thirteen people are charged after the FBI thwarted the alleged plot.

The FBI says it thwarted a militia plot to kidnap Michigan Gov. Gretchen Whitmer and overthrow the local government.

In Tuesday's debate, President Trump did not denounce white supremacists and gave fuel to at least one hate group. Extremism experts warn this will only add to an already volatile election season.

A Homeland Security whistleblower says he was ordered to make intelligence assessments about Russia and white supremacists seem less severe. What's been the impact on the white supremacist movement?

An Antifa supporter wanted in the shooting of a right-wing activist has been killed by law enforcement agents in Washington state. Growing violence has extremism researchers concerned.

Debates rage over how to portray Kyle Rittenhouse, the teen charged in the killing of two people and wounding a third.

The QAnon conspiracy theory's rapid spread and entry into politics are raising alarms. Georgia is poised to become the first state to elect someone to Congress who has openly supported the theory.

Georgia is poised to become the first state to elect a supporter of the right-wing QAnon conspiracy theory to Congress. The conspiracy's rapid spread and entry into politics are raising alarms.

Street clashes have erupted, involving a mix of protesters, authorities, extremists and agitators. With armed factions squaring off, terrorism analysts fear the worse is still to come.

President Trump and his supporters portray antifa as the left's equivalent to deadly far-right extremists. Domestic terrorism data show just one fatality is linked to antifa — the attacker himself.

The White House describes antifa as a violent mob of leftist extremists. But the government's findings show that the U.S. anti-fascist movement is linked to one death — one of its own.

Black protesters and Boogaloo boys, both carrying weapons but offering radically different visions of America, assembled in the former capital of the Confederacy over the holiday weekend.