John Brown was an American abolitionist who believed in using violent methods to eradicate slavery in the United States. He is most famous for leading an attack on a federal arsenal at Harpers Ferry, Virginia (now West Virginia), in 1859. Although unsuccessful in his aim of overthrowing slavery in the American South, Brown’s raid and his subsequent execution fueled tensions in the national debate over slavery in the United States. Historians credit Brown, his raid, and the public debates surrounding his trial and legacy with hastening Southern secession and the Civil War.