MOSCOW — The skinny dissident is thrown headfirst into a police van by camouflage-clad officers. Nearby, a dozen bearded men bearing Russian Orthodox crosses and wearing skull-and-crossbones T-shirts cheer on the cops.

It's the latest flare-up in a growing feud pitting supporters of the influential church, which sees itself as the nation's spiritual guide, against opponents who say the church has sold out to Vladimir Putin — becoming an arm of his regime more interested in gold than souls.