Од протестите во Киев

Interior Ministry officers gather during the rally held by supporters of EU integration in Kyiv.

Unidentified men attempt to break into a Kyiv city council building during the rally.

Opposition leaders attend the rally in Kyiv. From left to right. Arseny Yatsenyuk, a Ukrainian opposition leader; Jaroslaw Kaczynski, leader of Poland's main opposition Law and Justice Party and Vitali Klitschko, heavyweight boxing champion and UDAR (Punch) opposition party leader.

Protesters brought a tractor to try to break through police lines near the presidential administration building in Kyiv.