The Vaasa riot took place on 4 June 1930 in Vaasa, Finland, when members of the far-right, anti-communist, fascist Lapua Movement violently attacked communist supporters and bystanders at a courthouse in Vaasa. Police did not intervene in the attack.
While there were no fatalities or serious injuries during the attack outside the courthouse, members of the Lapua Movement kidnapped Asser Salo, a Finnish member of Parliament, who they later violently beat before releasing.
