How many fans of Pussy Riot’s zany “punk prayer” in the Cathedral of Christ the Savior and Nadezhda Tolokonnikova’s erudite and moving closing statement were equally thrilled by her participation, naked and heavily pregnant, in a public orgy at a Moscow museum in 2008? That performance, by the radical art group Voina (Russian for “war”), was meant to illustrate how Russians were abused by their government. Voina had previously set fire to a police car and drew obscene images on a St. Petersburg drawbridge.

Stunts like that would get you arrested just about anywhere, not just in authoritarian Russia. But Pussy Riot and its comrades at Voina come as a full package: You can’t have the fun, pro-democracy, anti-Putin feminism without the incendiary anarchism, extreme sexual provocations, deliberate obscenity and hard-left politics.

Unless you are comfortable with all that (and I strongly suspect 99 percent of Pussy Riot’s fans in the mainstream media are not), then standing behind Pussy Riot only now, when it is obviously blameless and the government clearly guilty, is pure opportunism. And just like in the bad old days, such knee-jerk yet selective support for Russian dissidents — without fully engaging with their ideas — is not only hypocritical but also does a great disservice to their cause.

A former Soviet dissident and current member of the anti-Putin opposition, Eduard Limonov, knows such cynicism too well. Thrown out of the Soviet Union and welcomed in New York as a Cold War trophy, Limonov soon learned that it wasn’t the dissent part that the United States loved about Soviet dissidents, but their anti-communism. A bristly and provocative anti-Soviet leftist, he got to work doing what he did best — taking on the establishment — and quickly found himself in hot water again, this time with the Americans. Limonov concluded that “the F.B.I. is just as zealous in putting down American radicals as the K.G.B. is with its own radicals and dissidents.”

At the core of much of the media fever over Pussy Riot lies a fundamental misunderstanding of what these Russian dissidents are about. Some outlets have portrayed the case as a quest for freedom of expression and other ground rules of liberal democracy. Yet the very phrase “freedom of expression,” with its connotations of genteel protest as a civic way to blow off some steam while life goes on, is alien to Russian radical thought. The members of Pussy Riot are not liberals looking for self-expression. They are self-confessed descendants of the surrealists and the Russian futurists, determined to radically, even violently, change society.