Serbian opposition lawmakers threw smoke grenades and used pepper spray inside parliament on Tuesday to protest against the government and to support demonstrating students, with one legislator suffering a stroke during the chaos.

At least three people were injured after Serbian opposition lawmakers protested a contentious vote by deploying smoke bombs and flares inside parliament in Belgrade on March 4. This video has no audio.

Serbia’s National Assembly devolved into chaos after opposition ministers threw smoke and stun grenades at the ruling party members. During a Tuesday parliamentary session in Belgrade, opposition lawmakers interrupted proceedings with whistles and horns,