Tallahassee, Fla. — Richard B. Spencer is one of the main figures of the alt-right movement, a former doctoral student from Duke whose movement supports the creation of “an ethno-state” for white Europeans and “peaceful ethnic cleansing.” The Southern Poverty Law Center describes him as “a suit-and-tie version of the white supremacists of old, a kind of professional racist in khakis”; a recent Los Angeles Times profile ran with a photo of him in sunglasses and a black shirt, looking more like a hipster academic than a Klansman.