Moscow law enforcers dispersed the protest in support of Nadiya Savchenko at Pushkin Square and detained the participants.
The "OMON" seized a Russian activist and politician Mark Halperin, reported "ATS-info".
Mark Halperin was standing with a placard in support of Nadiya Savchenko. Once he rolled it up and walked away, two unidentified men ran up to him and unfurled above him another placard. Following that Halperin and two men were detained.
The politician believes that the incident was a provocation.
Monday, March 21, the Donetsk Court in Rostov region is to pass a sentence on a Ukrainian pilot Nadiya Savchenko, illegally held in Russia.