p*ssy 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, February 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. (Photo by David Goldman/AP Photo)

Members of the punk group p*ssy Riot, including Nadezhda Tolokonnikova in the blue balaclava and Maria Alekhina in the pink balaclava, are attacked by Cossack militia in Sochi, Russia, on Wednesday, February 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. (Photo by Morry Gash/AP Photo)

A Cossack militiaman attacks Nadezhda Tolokonnikova as she and fellow members of the punk group p*ssy Riot, including Maria Alekhina, center, in the pink balaclava, stage a protest performance in Sochi, Russia, on Wednesday, February 19, 2014. (Photo by Morry Gash/AP Photo)

Members of the punk group p*ssy Riot, including Nadezhda Tolokonnikova in the blue balaclava and Maria Alekhina in the pink balaclava, are attacked by Cossack militia in Sochi, Russia, on Wednesday, February 19, 2014. (Photo by Morry Gash/AP Photo)

A Cossack militiaman attacks Nadezhda Tolokonnikova and a photographer as she and fellow members of the punk group p*ssy Riot, including Maria Alekhina, right, in the pink balaclava, stage a protest performance in Sochi, Russia, on February 19, 2014. (Photo by Morry Gash/Associated Press)

A member of the punk group p*ssy Riot is restrained by Cossack militia after the group tried to perform in Sochi, Russia, on Wednesday, February 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. (Photo by Morry Gash/AP Photo)

A russian security officer attacks Nadezhda Tolokonnikova and a photographer as she and fellow members of the punk group p*ssy Riot, including Maria Alekhina, left, stage a protest performance in Sochi, Russia, on Wednesday, February 19, 2014. (Photo by Morry Gash/AP Photo)

A member of the punk group p*ssy Riot is restrained by a member of the Cossack militia in Sochi, Russia, on Wednesday, February 19, 2014. Cossack militia attacked the p*ssy Riot punk group with horsewhips on Wednesday as the group tried to perform under a sign advertising the Sochi Olympics. 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. (Photo by Morry Gash/AP Photo)

Wearing masks members of Russian punk group p*ssy Riot, Nadezhda Tolokonnikova (L) and Maria Alyokhina (R) speak to journalists while leaving the police station of Adler, near Sochi, on February 18, 2014 after her arrest earlier in the host city of the 2014 Winter Olympics. Tolokonnikova and Maria Alyokhina walked free after being questioned about an alleged theft from a hotel. (Photo by Andrej Isakovic/AFP Photo)

p*ssy Riot members Nadezhda Tolokonnikova, center, and Maria Alekhina, left, arrive for a press conference while followed by a person in a chicken costume protesting the punk group – who have feuded with Vladmir Putin's government for years – Thursday, February 20, 2014, in Sochi, Russia. (Photo by David Goldman/AP Photo)