30 November 2013 attack on protesters

The Euromaidan (Ukrainian: Євромайдан, Yevromaidan, literally "Eurosquare") was a wave of demonstrations and civil unrest in Ukraine, which began on the night of 21 November 2013 with very large public protests demanding closer European integration. The scope of the protests evolved over subsequent months, culminating in resignation of Azarov's government and ousting of President Yanukovych. Protesters also have stated they joined because of the dispersal of protesters on 30 November and "a will to change life in Ukraine". By 25 January 2014 the protests had been fueled by the perception of widespread government corruption, abuse of power, and violation of human rights in Ukraine.

Euromaidan started in the night of 21 November 2013 when up to 2,000 protesters gathered at Kiev's Maidan Nezalezhnosti and began to organize themselves with the help of social networks. After he heard of the Ukrainian government decree to suspend preparations for signing of the Association Agreement on 21 November 2013, opposition party Batkivshchyna faction leader Arseniy Yatsenyuk called, via Twitter, for protests (which he dubbed as #Euromaidan) on Maidan Nezalezhnosti. The blog of Yuri Andreev on Korrespondent.net asked people to gather on Maidan Nezalezhnosti that day at 22:30.

Approximately 2,000 people converged in the evening of 22 November on Maidan Nezalezhnosti (Independence Square) to protest the decision of the Ukrainian government to suspend the process of integration of Ukraine into the European Union. In the following days, the opposition and pro-EU parties led the protests.

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Wikipedia