The cleaners had scrubbed the debating chamber clean before MPs arrived for Wednesday's session in Serbia's National Assembly. Spent smoke bombs, smears of egg yolk and a dusting of white fire extinguisher powder had all been removed from the benches and tables after the mayhem of the previous day.

Serbia's parliament witnessed chaos on Tuesday as opposition lawmakers staged a violent protest inside the legislative house, amid widespread anti-government demos.

Belgrade, Serbia—Serbian opposition lawmakers lit flares and discharged suspected tear gas during the opening day of the spring session of parliament on