The Atlantic writes, The Fox host and the Democratic congressman ranted at each other for six minutes. What were they ranting about? Good question. Fox News, a frequent source of epic interviews ("U mad, bro?") produced another instant classic Tuesday night. Rep. Keith Ellison, a Minnesota Democrat, and Sean Hannity had one of the more impressive fights we've seen on air for some time -- if not as lengthy as the famous Alex Jones-Piers Morgan contretemps, at least as heated at its peak. Within the first half a minute, Ellison had called Hannity "the worst excuse for a journalist I've ever seen." Hannity pretended…