Online forums popular with Trump supporters lit up with gleeful posts about the chaotic scenes broadcast from the Capitol. Thousands of messages on Parler, a right-wing alternative to Twitter, included the hashtag #civilwar or other variations of the term.

“If you’re surprised, you haven’t been paying attention,” said Integrity First for America executive director Amy Spitalnick. “We should all be horrified by this, but nobody should be surprised that this is happening.”…

Oren Segal, vice president of the ADL’s Center on Extremism, said he spotted members of other white supremacist and neo-Nazi groups — the New Jersey European Heritage Association and Nationalist Social Club — among the pro-Trump crowds in Washington on Tuesday and Wednesday. The storming of the Capitol is the “logical conclusion to extremism and hate going unchecked” during Trump’s presidency, Segal said.

“We had conspiracy theories animating people to action on the ground. We had the mainstream and the extreme narratives meld,” Segal said.