Police charged a protester who allegedly attacked a Trump supporter after an event at a Manhattan nightclub Saturday night that was headlined by ultra right-winger Mike Cernovich.

Violence erupted around 10:30 p.m. when anti-Trump protesters, including 30-year-old David Campbell, clashed with alt-right supporters as they were leaving A Night For Freedom, a ticketed event held at a nightclub on West 50th Street and 12th Avenue in Hell’s Kitchen.

About 80 protesters gathered outside as event-goers spilled out of the venue.

Police said Campbell spotted and followed the 56-year-old victim who had left the event. Once they were about a block away, Campbell allegedly choked and punched the man.

The victim, whose identity wasn’t released, was taken to Bellevue Hospital in stable condition.

Campbell was charged with strangulation, assault, resisting arrest, loitering, criminal possession of a weapon and obstruction of government administration, police said. Chernovich called Campbell a “terrorist.”