Richard Spencer, a prominent "alt-right" activist and white nationalist, was punched Friday during an interview amid Inauguration Day protests.

Spencer was speaking to ABC News Washington bureau chief Zoe Daniel when a demonstrator struck him across the face.

He responded on Twitter shortly after the incident, saying there was “no serious damage” done, and that he could “take a punch.”

I was just physically assaulted twice by antifas. No serious damage. I can take a punch. — Richard Spencer (@RichardBSpencer) January 20, 2017

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Spencer is the president of the white nationalist National Policy Institute and has drawn national attention in recent months for his support for President Trump. Spencer said last month that he was considering running for Congress.

The incident happened as people took to downtown Washington to protest Trump’s inauguration Friday. D.C. police said that more than 200 protesters were arrested and charged with rioting.