As John Brown and his men swing their steel broadswords on a moon-lit night, we look at the fierce debate among historians over whether even the most righteous forms of political violence can be justified. [Subscribers can get EARLY ACCESS to Episode Four, "No Ghost of a Distinction" by throwing $3 our way at American Carnage on Patreon.] Learn more about your ad choices. Visit megaphone.fm/adchoices