The War of Kindness was a multi-generational event happening in Thaelia from 812 to 889 AC, where the continent's government went to war against kindness. People were too kind and being less productive.
The war ended in 889 AC when Sir Jon Kindhearted was captured, tortured until he stopped being kind, and killed.
During the war, Kindness was bottled and sold as projectiles to throw on non-kind people.