The all-female performance group known as "Pussy Riot" staged a street protest in Sochi, site of the Winter Olympics - only to be worked over by Cossacks.

In this video, the troupe is seen donning their now-familiar ski masks and chanting.  Moments later uniformed Cossacks approach the group, swinging at them with rubber truncheons.

The group said it was in Sochi to protest the crackdown on civil liberties.

Two group members were briefly detained Tuesday in connection with an alleged theft at their hotel.

Sources: YouTube, CNN

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