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Pussy Riot member Nadezhda Tolokonnikova walks on a sidewalk in Sochi, Russia, on Wednesday, Feb. 19, 2014. Cossack militia attacked the punk group with horsewhips earlier in the day as the artists - who have feuded with Vladmir Putin's government for years - tried to perform under a sign advertising the Sochi Olympics. (AP Photo/David Goldman) ( Sochi Olympics Pussy Riot )

Members of the punk group Pussy Riot, including Nadezhda Tolokonnikova in the aqua balaclava, center, and Maria Alekhina in the red balaclava, left, perform next to the Olympic rings in Sochi, Russia, on Wednesday, Feb. 19, 2014. Cossack militia attacked the punk group with horsewhips earlier in the day as the artists - who have feuded with Vladmir Putin's government for years - tried to perform under a sign advertising the Sochi Olympics. (AP Photo/David Goldman) ( Sochi Olympics Pussy Riot )

A Cossack militiaman attacks Nadezhda Tolokonnikova and a photographer as she and fellow members of the punk group Pussy Riot, including Maria Alekhina, center, in the pink balaclava, stage a protest performance in Sochi, Russia, on Wednesday, Feb. 19, 2014. The group had gathered in a downtown Sochi restaurant, about 30km (21miles) from where the Winter Olympics are being held. They ran out of the restaurant wearing brightly colored clothes and ski masks and were set upon by about a dozen Cossacks, who are used by police authorities in Russia to patrol the streets. (AP Photo/Morry Gash) ( APTOPIX Sochi Olympics )

A member of the punk group Pussy Riot lies on the ground as the group are attacked by Cossack militia in Sochi, Russia, on Wednesday, Feb. 19, 2014. The group had gathered to perform in a downtown Sochi restaurant, about 30km (21miles) from where the Winter Olympics are being held.They left the restaurant wearing bright dresses and ski masks and had only been performing for a few seconds when they were set upon by Cossacks. (AP Photo/Morry Gash) ( Sochi Olympics Pussy Riot )

A member of the punk group Pussy Riot is restrained by Cossack militia after the group tried to perform in Sochi, Russia, on Wednesday, Feb. 19, 2014. The group had gathered in a downtown Sochi restaurant, about 30km (21miles) from where the Winter Olympics are being held. They left the restaurant wearing bright dresses and ski masks and had only been performing for a few seconds when they were set upon by Cossacks. (AP Photo/Morry Gash) ( APTOPIX Sochi Olympics Pussy Riot )

Blood trickles down the face of a member of the punk group Pussy Riot after they were attacked by Cossack militia as they staged a protest performance in Sochi, Russia, on Wednesday, Feb. 19, 2014. The group had gathered in a downtown Sochi restaurant, about 30km (21miles) from where the Winter Olympics are being held. They ran out of the restaurant wearing brightly colored clothes and ski masks and were set upon by about a dozen Cossacks, who are used by police authorities in Russia to patrol the streets.(AP Photo/Morry Gash) ( Sochi Olympics Pussy Riot )

A Russian security officer records members of the punk group Pussy Riot Nadezhda Tolokonnikova, right, and Maria Alekhina, center, after they were attacked by Cossack militia in Sochi, Russia, on Wednesday, Feb. 19, 2014. Cossack militia attacked the Pussy Riot punk group with horsewhips on Wednesday as the group tried to perform under a sign advertising the Sochi Olympics. (AP Photo/Morry Gash) ( Sochi Olympics Pussy Riot )

Pussy Riot member Nadezhda Tolokonnikova in the aqua balaclava, left, interacts with an Olympic mascot while the group perform next to the Olympic rings in Sochi, Russia, on Wednesday, Feb. 19, 2014. Cossack militia attacked the punk group with horsewhips earlier in the day as the artists - who have feuded with Vladmir Putin's government for years - tried to perform under a sign advertising the Sochi Olympics. (AP Photo/David Goldman) ( Sochi Olympics Pussy Riot )

A Cossack militiaman attacks Nadezhda Tolokonnikova as she and fellow members of the punk group Pussy Riot, including Maria Alekhina, center, in the pink balaclava, stage a protest performance in Sochi, Russia, on Wednesday, Feb. 19, 2014. The group had gathered in a downtown Sochi restaurant, about 30km (21miles) from where the Winter Olympics are being held. They ran out of the restaurant wearing brightly colored clothes and ski masks and were set upon by about a dozen Cossacks, who are used by police authorities in Russia to patrol the streets. (AP Photo/Morry Gash) ( Sochi Olympics )

Russian punk group Pussy Riot members Nadezhda Tolokonnikova, in the blue balaclava, and Maria Alekhina, in the pink balaclava, run down the street with other women after they were released from a police station, Tuesday, Feb. 18, 2014, in Adler, Russia. No charges were filed against Tolokonnikova and Alekhina along with the others who were detained. (AP Photo/Morry Gash) ( Sochi Olympics Pussy Riot )

Nadezhda Tolokonnikova (C) and Maria Alyokhina (L), the two best known members of Russian punk group Pussy Riot, leave the police station of Adler, near Sochi, on February 18, 2014 after their arrest earlier in the host city of the 2014 Winter Olympics. They walked free after being questioned about an alleged theft from a hotel. (ANDREJ ISAKOVIC/AFP/Getty Images) ( 527211307 )

A members of Russian punk group Pussy Riot, Nadezhda Tolokonnikova, speaks by her cell phone, as she is escorted to a police car after being detained in the Adler district of Sochi, on February 18, 2014. Tolokonnikova and her fellow member of the punk group, Maria Alyokhina, were arrested today in the centre of the Winter Games host city of Sochi over accusations of theft from a local hotel. (EVGENY FELDMAN/AFP/Getty Images) ( 527209575 )

Russian punk group Pussy Riot members Nadezhda Tolokonnikova, in the blue balaclava, and Maria Alekhina, in the pink balaclava, make their way through a crowd after they were released from a police station, Tuesday, Feb. 18, 2014, in Adler, Russia. No charges were filed against Tolokonnikova and Alekhina along with the three others who were detained. (AP Photo/Morry Gash) ( Sochi Olympics Pussy Riot )

Members of Russian punk group Pussy Riot, Nadezhda Tolokonnikova (front L) and Maria Alyokhina (front R) perform in front of Sochi 2014 Winter Olympic games mascots as they record a video in the Adler district of Sochi, early on February 18, 2014. Tolokonnikova and Alyokhina and at least half a dozen others were arrested today in the centre of the Winter Games host city over accusations of theft from a local hotel. (EVGENY FELDMAN/AFP/Getty Images) ( 527208539 )