Question: John Brown, was an American abolitionist who believed and advocated that armed insurrection was the only way to overthrow the institution of slavery in which location, during the Kansas campaign, Brown commanded forces at which battle that took place on June 2, 1856, when anti-slavery forces, led by the noted abolitionist John Brown, attacked the encampment of Henry C. Pate near Baldwin City, Kansas?
Sentence (from "John Brown (abolitionist)"): He and his supporters killed five supporters of slavery in the Pottawatomie massacre of May 1856 in response to the sacking of Lawrence by pro-slavery forces.
Relevant evidence: No