Amnesty International, an international human rights organization, says arrests of peaceful demonstrators for use of Soviet marks is a step toward limitation of freedom of speech and peaceful gatherings. Amnesty International gave the position in a statement, Ukrainian News Agency reports. "The ban of marks linked with the communist party and the Soviet past (the laws on 'de-communization' adopted in 2015) represents violation of the right to freedom of opinion and expression and the arrest of peaceful demonstrators is a step toward limitation of the freedom of speech and peaceful gatherings from the side of the Ukrainian authorities," reads the statement. Amnesty International urges the Ukrainian authorities to free all demonstrators and demands effective and unbiased investigation into all cases of violence during the demonstrations of May 9. As Ukrainian News Agency earlier reported, Interior Minister of Ukraine Arsen Avakov has dismissed Ihor Repeshko, the head of the Dnipropetrovsk regional office of the National Police of Ukraine, and Andrii Bidylo, the head of the Dnipro city police. Police arrested over 50 citizens during events marking the Victory Day in Ukraine on May 9, 2017. On May 9, 2017, 14 citizens, including six National Police servicemen, were injured during clashes in Dnipro.