Tens of thousands of demonstrators took to the streets in Russia on Sunday in nationwide protests against government corruption — the country’s largest anti-government protest in several years. One of the most striking photos from the protests depicted Olga Lozina in Moscow being carried away by several police officers, who held her by her arms and legs. Lozina, who described herself as “a graduate of Physical-Technical Institute,” told the Russian website Meduza that she had been walking through the center of Moscow with her mother and sister, when they encountered a police blockade and a crowd of people.