But the heart of the series is the immigrant experience—and its frequent burden of social exclusion—as in Allan Dwan’s “East Side, West Side” (1927), in which struggling Jewish and Irish neighbors clash and coöperate; Martin Scorsese’s Little Italy-set crime thriller “Mean Streets” and his documentary “Italianamerican,” a discussion with his parents, who were born in Sicily; and the drama “El Super,” directed by Leon Ichaso and Orlando Jiménez Leal, which shows a Cuban family struggling to fit into American life. And in Mabel Cheung’s drama “The Illegal Immigrant” (1985), set in Manhattan’s Chinatown, a young man from Canton, facing deportation, arranges a paid marriage while contending with pressure from local gangsters.—Richard BrodyAbout TownArt