The Intelligent Homosexual’s Guide to Capitalism and Socialism with a Key to the Scriptures, written by Tony Kushner, takes place in a Brooklyn brownstone where Gus (Mark Margolis), a retired longshoreman and union organizer, has decided to kill himself. His grown children — Pill (Lou Liberatore), Empty (Deirdre Lovejoy), and Vito (Joseph J. Parks) — and his sister Clio (Randy Danson) are not too keen on the idea, as you can imagine, and all gather in Gus’ Carroll Gardens home to try to change his mind. As you might suspect from the “intelligent” in the title, much of the play’s dialogue is peppered with philosophy, Marxist creeds, and theology — even the sex scenes are remarkably heady — but the central force behind the familial struggle requires no outside reading on dialectics or tracts on the history of labor. It’s decidedly animalistic. Kushner’s commitment to the visceral and dramatic remains intact, and the humor is abundant, even if it is decidedly gallows-based.