150 years ago this week, a band of raiders from Missouri led an attack on Lawrence, Kan. More than 180 people were killed as the city burned.
Tensions had been high in the region for decades, ever since Missouri was granted status as a slave state in 1820. Kansas was a free state, and that led to violence on both sides of the state border.
In the years since, Lawrence rebuilt and became home to the University of Kansas. Some fans of the Universities of Missouri and Kansas point to the raid as the start of a heated rivalry between the schools.
And on the anniversary of that raid, orchestrated by Confederate leader William Quantrill, some Missourians celebrated Quantrill's actions. This family burned Kansas merchandise in celebration: