John Brown led a raid on a federal armory in Harpers Ferry, Virginia in 1859 hoping to start a slave revolt. He was captured along with 21 men, including 5 black men, and was later hanged for his actions. The raid gained significant attention as it showed the divide between abolitionists in the North and pro-slavery advocates in the South. Events like the Kansas-Nebraska Act and Dred Scott decision inflamed tensions by renewing hopes of expanding slavery and ruling that blacks could not be citizens, pushing Brown and others to take action. His raid was seen as a catalyst for the eventual Civil War as it demonstrated the North was willing to use force and increased political tensions between free and slave states.