It figures that you are unable to discriminate between the use of force in defense of rights versus the initiation of force to violate rights.
On the night of May 24, 1856, John Brown and his company of Free State volunteers murdered five men settled along the Pottawatomie Creek in southeastern Kansas. The victims were prominently associated with the pro-slavery Law and Order Party, but were not themselves slave owners. This assault occurred three days after Border Ruffians from Missouri burned and pillaged the anti-slavery haven of Lawrence, and two days after Massachusetts Senator Charles Sumner was severely beaten by Senator Preston Brooks of South Carolina.At the Doyle farm, James and two of his sons, William and Drury, were dragged outside and hacked up with short, heavy sabres donated to Brown in Akron, Ohio.
http://xroads.virginia.edu/~HYPER/CONTEXTS/Kansas/jbrown.html