In the Line of Duty: Manhunt in the Dakotas

Gordon Kahl is man who feels that the U.S. government doesnt care about the American farmer, so he retaliates by not paying taxes. He would be sent to prison and upon being released, his views have not changed. He encourages anyone who is having trouble not to pay taxes. He also joins a paramilitary and a white supremacy group. When the FBI learns of this, they try to arrest Kahl but Kahl, armed, doesnt want to go, and when the Feds dont let him go, he kills most of them. He then goes on the run and its up to the FBI agent to headed the operation to find Kahl, and anyone else who may have been involved.