Stockholm Bloodbath: Danish forces under King Christian II execute a large number of Swedish nobles in Stockholm. The executions were carried out on November 8 and 9, 1520, after King Christian II coronation.
He had a list of around 82 Swedish nobles, clergy, and townspeople, many of whom were opponents of the Kalmar Union. The bloodbath did not secure Christian's control over Sweden; instead, it led to outrage and fueled the Swedish War of Liberation. This war was led by Gustav Vasa, who ultimately drove out the Danes and was elected king in 1523, ending the Kalmar Union.