The peak of Euromaidan events (peaceful protests which started in November 2013, after then-president of Ukraine Yanukovych refused to sign the EU Association Agreement, and subsequently led to change of authorities in Ukraine - ed.) happened on Feb. 18-20, 2014, Censor.NET reports citing zn.ua.
Feb. 18 was the day when the opposition announced a march called 'Peaceful attack' to support the Verkhovna Rada's voting to return to Constitution of 2004. Thousands of people went to the parliamentary building, which was circled with special forces supported by the so-called 'titushkas' (nickname for paid protesters, usually from lower social classes - ed.).
The protest, which was planned as non-violent, turned into a massive collision. Police started to use weapons and opened fire on protesters from rooftops of nearby houses. The barricades in the Kyiv's downtown were attacked. It was Feb. 18 when Kyiv's metro stopped working for the first time, allegedly in connection with possible terrorist attacks.
During the confrontation, numerous fires started in Kyiv's downtown. Maidan protesters burned an armored personnel carrier which was used by the security forces storming the barricades. The fire in the House of Trade Unions at Maidan Nezalezhnosti claimed lives of those who were inside it.
The shooting of demonstrators, most of whom had no other weapons than homemade shields, on Instytutska street in the governmental block became the culmination of the confrontation in the next few days. The escalation of violence that took lives of tens of people (73 protesters and 11 soldiers of the security forces were killed in those days) shook the decreasing support of then-president Viktor Yanukovych, who fled to Russia.
Investigation of these tragic events has not yet been completed. The authorities have found part of perpetrators and those who are considered guilty of the massacre from the country's then-top leaders who fled to the Russian Federation. However, only a few were in fact detained, and complete detailed picture of the incident has not yet been recovered by the investigators.