A decade ago, Daryl Johnson, then a senior terrorism analyst at the Department of Homeland Security, wrote a report about the growing danger of right-wing extremism in America. Citing economic dislocation, the election of the first African-American president and fury about immigration, he concluded that “the threat posed by lone wolves and small terrorist cells is more pronounced than in past years.”

When the report leaked, conservative political figures sputtered with outrage, indignant that their ideology was being linked to terrorism. The report warned, correctly, that right-wing radicals would try to recruit disgruntled military veterans, which conservatives saw as a slur on the troops. Homeland Security, cowed, withdrew the document. In May 2009, Johnson’s unit, the domestic terrorism team, was disbanded, and he left government the following year.

Johnson was prescient, though only up to a point. He expected right-wing militancy to escalate throughout Barack Obama’s administration, but to subside if a Republican followed him. Ordinarily, the far-right turns to terrorism when it feels powerless; the Oklahoma City bombing happened during Bill Clinton’s presidency, and all assassinations of abortion providers in the United States have taken place during Democratic administrations. During Republican presidencies, paranoid right-wing demagogy tends to recede, and with it, right-wing violence.

But that pattern doesn’t hold when the president himself is a paranoid right-wing demagogue.

“The fact that they’re still operating at a high level during a Republican administration goes against all the trending I’ve seen in 40 years,” Johnson told me. Donald Trump has kept the far right excited and agitated. “He is basically the fuel that’s been poured onto a fire,” said Johnson.