Three rallies ended with detention in Moscow on Sunday: The gay demonstration, the rally of political party "Yabloko" and "white" action.
More than 100 people are detained.
Activists gathered near Red Square in front of the Kremlin and walked toward the popular Arbat pedestrian district, but were detained upon reaching the sit-in protest which began earlier this month, - Reuters reported.
Witnesses said riot police treated protesters who resisted roughly. "One man in his 50s was grabbed and carried away by his arms and legs. It was terrible," said Natalia Pozdnyakova, 73, dressed in white, the color which has become the symbol of the protests.
Police told Russian news agency Interfax 35 people had been detained.
Earlier in the day, dozens of people were detained when Russian Orthodox Church activists clashed with gay rights protesters in central Moscow.
