Russian President Vladimir Putin, the career KGB officer who has presided over the rollback of his country’s post-Communist freedoms and revived Cold War-style anti-Americanism, is an unlikely hero for American conservatives. Yet the Kremlin strongman has lately found some fans on the right who see him as a defender of Christian values — most recently, in the imbroglio over Russia’s new legal ban on gay “propaganda.” It is a sad misjudgment that does a disservice to the causes of conservatism, freedom, and religion alike. Spokesmen for several right-wing groups including the American Family Association have praised the Russian law, which...