Bleeding Kansas
Bleeding Kansas, sometimes referred to as Bloody Kansas, was a sequence of violent events that took place in Kansas Territory between roughly 1854 and 1856. The territory bordered Missouri, a state where slavery was allowed, and the area became a battleground for pro-slavery and anti-slavery forces who fought over whether the resulting state of Kansas should be a slave state or a free state.
A few famous people involved with Bleeding Kansas are John Brown and Silas Soule.
See also