On 30 November 2013, the protests were dispersed violently by the Berkut riot police units, sparking riots the following day in Kyiv. On 1 December 2013, protesters reoccupied the square and through December further clashes with the authorities and political ultimatums by the opposition ensued. This culminated in a series of anti-protest laws by the government on 16 January 2014, and further rioting on Hrushevskoho Street. Early February 2014 saw a bombing of the Trade Unions Building, as well as the formation of "Self Defense" teams by protesters.