Cristian Mungiu’s Norway-set drama about political polarization “Fjord” has won the Palme d’Or. The Cannes Film Festival’s top honor on Saturday went for the second time to the Romanian director of “4 Months, 3 Weeks and 2 Days.” This year’s edition of the festival saw few films breakout but “Fjord” found wide admiration for its engrossing tale of what Mungiu called “left-wing fundamentalism.” The film stars Sebastian Stan and Renate Reinsve as Romanian Evangelicals who move to Norway, but soon after have their children taken from them by child services for spanking them.