The Schaubühne Berlin production of Returning to Reims addresses fascinating material—the evolution of French political life in the 20th century, notably a working class that was heavily communist in the 1920s to one that increasingly embraces the right-wing National Front of Marine Le Pen. U.S. dramatists rarely tackle political subjects of such depth, but the static execution of Thomas Ostermaier’s production undercuts much of the daring of that choice.