The late historian and author of “The Paranoid Style in American Politics” misdiagnosed the fate of modern conservatism.

As impeachment and the 2020 election loom, Trump’s hard-core supporters are poised to unleash a wave of violence against their enemies.

Conspiracy theories aren't hiding on the fringes. They're coming straight from the power centers in the White House and GOP.

Wednesday's shooting has prompted much handwringing about the state of the nation. But political violence and anger are embedded in America's DNA.

The long and tragical history of post-partisanship, from Washington to Obama.