Working at various times as a farmer...he gave land to fugitive slaves. He and his wife agreed to raise a black youth as one of their own. He also participated in the Underground Railroad.

In 1847 Frederick Douglass met Brown for the first time in Springfield, Massachusetts. Of the meeting Douglass stated that, "though a white gentleman, [Brown] is in sympathy a black man, and as deeply interested in our cause, as though his own soul had been pierced with the iron of slavery." It was at this meeting that Brown first outlined his plan to Douglass to lead a war to free slaves. In Kansas, Brown went to a proslavery town and brutally killed five of its settlers. Brown and his sons would continue to fight in the territory and in Missouri for the rest of the year.

Brown returned to the east and began to think more seriously about his plan for a war in Virginia against slavery. He sought money to fund an "army" he would lead. On October 16, 1859, he set his plan to action when he and 21 other men -- 5 blacks and 16 whites -- raided the federal arsenal at Harpers Ferry.

Although initially shocked by Brown's exploits, many Northerners began to speak favorably of the militant abolitionist. "He did not recognize unjust human laws, but resisted them as he was bid. . . .," said Henry David Thoreau in an address to the citizens of Concord, Massachusetts. "No man in America has ever stood up so persistently and effectively for the dignity of human nature. . . ."

John Brown was hanged on December 2, 1859.