They are the largest hate group in America, wrapping themselves in the red-white-and-blue of the flag, marching into the middle of American cities and claiming to be patriots. Yet, a NewsChannel 5 investigation discovered that those flag-waving marches hide the hate behind their cause. Behind the scenes, Patriot Front is preparing for war, building a compound in Tennessee where they train men for battles that sometimes play out on the streets of America. "These are hardened white supremacists who want to see a white ethno-state created somewhere in the United States," said Jeff Tischauser, the senior researcher who tracks Patriot Front and other hate groups for the Southern Poverty Law Center.