A self-described comedian-activist was one of three protesters whose demonstration against “fascism” in the “art world” interrupted the Metropolitan Opera in Manhattan last week, The Post has learned.

Davidson Boswell, 34, of Harlem was charged with criminal trespassing after he decried late billionaire mega-city-arts benefactor David H. Koch from his seat while two activist buddies stormed the opera house’s storied stage in Lincoln Center and waved banners about 9 p.m. Friday, police said.

Security guards ended up hauling the protesters off the stage as the curtain dropped, according to videos posted to social media.

The brouhaha paused the show for roughly 20 minutes.

Koch, who died in 2019, is the namesake of the famed complex’s theater that houses the New York City Ballet and w

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