On 5 December 2021, police officers deployed tear gas and fired a water cannon at protesters marching along the N3 roadway near the Parc du Cinquantenaire and other areas of central Brussels, the capital. Approximately 8,000 people had gathered to oppose the implementation of additional coronavirus-related restrictions in Belgium. Several groups of demonstrators blocked roadways and threw projectiles toward police officers. At least six individuals, including two police officers, suffered minor injuries due to the clashes. Police officers arrested 20 people during the demonstration.