The film shows a burning crucifix, gun-toting priests and the torture of a young boy. And the Roman Catholic hierarchy is loving it. The film, “For Greater Glory,” hits theaters on June 1 and tells a little known chapter of Mexican history — the Cristero War of 1926 to 1929, which pitted an army of devout Catholic rebels (led in the movie by Andy Garcia) against the government of Mexican President Plutarco Calles (played by Ruben Blades). For Catholics enraged by the Obama administration’s proposed contraception mandate, the film about the Mexican church’s fight in 1920s is a heartening and...