Beck, 47, said cinemagoers turned on him during Monday's screening of Alfred Hitchcock's "The 39 Steps." One person, he said, shouted "We hate conservatives here" and another yelled "We're in New York and we hate Republicans."
To top it off, one angry person purposefully kicked a cup of wine onto his wife's back, as others snapped photographs of him and his family, said Beck.
He likened the attack to a public lynching.
"'I swear to you, I think, if I had suggested, and I almost did, 'Wow, does anybody have a rope? Because there's tree here. You could just lynch me.' And I think there would have been a couple in the crowd that would have," Beck said on his radio show.
Beck decided against leaving, but said the crowd -- "some of the most hateful people" he has ever seen -- began to applaud as he exited at the end of the film.
"I have a right to watch a movie and enjoy a movie with my family in the park," he said.
Fox News host Glenn Beck: My family was harassed during New York Bryant Park movie '39 steps'