Riot police briefly detained about 15 people trying to hold an anti-Kremlin demonstration in central Moscow on Monday to defend Russians' constitutional right to assembly.
Camouflage-clad police grabbed the protesters as they arrived at the square near the Tchaikovsky Concert Hall and hustled them into buses, carrying some by their arms and legs.
Police spokesman Viktor Biryukov said they were released within an hour. Among those detained was opposition leader Eduard Limonov, who was stopped by police as he walked toward the square, the spokesman said.
Prominent rights activists Lev Ponomaryov and 82-year-old Lyudmila Alexeyeva attended the failed protest but were not detained. They are among the outspoken critics of the government's regular refusal to allow opposition rallies in central locations.
Under the current Kremlin leadership, the political opposition has been pushed out of parliament, largely barred from elections, denied access to national television and harassed.
Monday's action was a repeat of a July 31 protest in the same location, which also was broken up by police. The opposition activists have vowed to try again on Oct. 31 and Dec. 31.
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