He had to hang for the people who were killed in his attack on Harper's Ferry. Justice was served & a martyr created all at the same time. He was right when he said "the crimes of this guilty land will never be purged away but with blood". The Civil War remains our bloodiest conflict in history with 600,000 dead. There are apparently damned fools out there who'd do it again to re-establish white supremacy & monuments to the leaders of the confederacy are a powerful symbol & a rallying point for their desires.
Weird that John Brown had to hang for the people who were killed in his attack on Harper's Ferry, but no Confederate Officers had to hang for killing hundreds of thousands of people in an effort to keep people enslaved.
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Had I so interfered in behalf of the rich, the powerful, the intelligent, the so-called great, or in behalf of any of their friends, either father, mother, brother, sister, wife, or children, or any of that class, and suffered and sacrificed what I have in this interference, it would have been all right; and every man in this court would have deemed it an act worthy of reward rather than punishment. This court acknowledges, as I suppose, the validity of the law of God. I see a book kissed here which I suppose to be the Bible, or at least the New Testament. That teaches me that all things whatsoever I would that men should do to me, I should do even so to them. It teaches me, further, to "remember them that are in bonds, as bound with them." I endeavored to act up to that instruction. I say, I am yet too young to understand that God is any respecter of persons.
I believe that to have interfered as I have done as I have always freely admitted I have done in behalf of His despised poor, was not wrong, but right. Now, if it is deemed necessary that I should forfeit my life for the furtherance of the ends of justice, and mingle my blood further with the blood of my children and with the blood of millions in this slave country whose rights are disregarded by wicked, cruel, and unjust enactments, I submit; so let it be done!
-John Brown