A hidden camera captured members of a white supremacist group expressing hope that violence at a gun rights rally in Virginia this week could start a civil war, federal prosecutors said in a court filing Tuesday. Former Canadian Armed Forces reservist Patrik Jordan Mathews also videotaped himself advocating for killing people, poisoning water supplies and derailing trains, a prosecutor wrote in urging a judge in Maryland to keep Mathews and two other members of The Base detained in federal custody. Last month, a closed-circuit television camera and microphone installed by investigators in a Delaware home captured Mathews talking about the Virginia rally as a “boundless” opportunity.
