DeAndre Harris, 20, was seen bloodied in viral photos and a video after being attacked during the rally in August.
He is now charged with unlawful wounding in relation to the brawl.
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The magistrate’s office called the police department to confirm the facts, and they then issued the warrant.
Harris’ attorney, S. Lee Merritt, told the Washington Post that the warrant is ‘clearly retaliatory’.
Merritt said it was ‘highly unusual’ for a victim to go to the magistrate instead of the police, suggesting he tried and failed to convince cops to arrest Harris first. The police don’t have sufficient probable cause to charge Harris, his lawyer said.