The lawyer defending Crimean Tatar activists was taken in custody on misdemeanor obstruction charges.
The law ‘On Indigenous People’ came into force in Ukraine on Friday, July 23.
In the speech that remembered mass deportation of Crimean Tatars, Ukrainian MP Mustafa Jemilev compared the Soviet regime crimes against the people of Crimea to Russian annexation of the peninsula in 2014.
Ukraine marks the anniversary of mass deportation of Crimean Tatars ordered by the Soviet regime - 180,014 of them were forced into exile in three-day operation that started on May 18, 1944.