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These days, political battles are regularly fought in the popular press, and prize-winning poets, lounge singers, and sitcom stars routinely trot up to the Capitol to take stands on various issues. According to Norman Kleebatt, curator of collections at the Jewish Museum, this phenomenon began just a century ago, with the controversial trial of French military officer Alfred Dreyfus, who was convicted (and later cleared) of betraying military secrets in an atmosphere charged with anti-Semitism. For his lecture, “The Dreyfus Affair—One Hundred Years Later,” Kleebatt will use slides of paintings, photographs, newspaper caricatures, and other artifacts to illustrate how such Dreyfus supporters and detractors as Zola, Monet, and Degas entered the fray. At 7 p.m. at the Corcoran Gallery of Art’s Hammer Auditorium, 17th & New York Ave. NW. $16. (202) 347-3601. (MJ)