A police officer photograps a man holding a placard during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

A police officer photograps a man holding a placard during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

A police officer photograps a man holding a placard during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

A police officer photograps a man holding a placard during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

A police officer photograps a man holding a placard during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

A police officer photograps a man holding a placard during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

A police officer photograps a man holding a placard during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

People hold placards during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

A police officer photograps a man holding a placard during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

A police officer photograps a man holding a placard during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

People hold placards during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

People hold placards during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

People hold placards during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

People hold placards during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.

People hold placards during a gathering at the Prosecutor General's Office in support of the opposition activist Ildar Dadin, who became the first person in Russia imprisoned for a series of street protests.