Police say the activists were holding an unauthorized demonstration . The protesters are demanding that police release a list of names and addresses of people who have been arrested in connection with Occupy Wall Street protests. A prominent activist was among those detained . `` The picket was devoted to the anniversary of the decriminalization of homosexuality in Russia and was not sanctioned by the authorities , '' RIA Novosti said . The incident took place outside the Moscow city hall , reports say .
Police say the activists were holding an unauthorized demonstration . The protesters are demanding that police release a list of names and addresses of people who have been arrested in connection with Occupy Wall Street protests. A prominent activist was among those detained . The incident took place outside the Moscow city hall , reports say .