(Vancouver, WA)  --  Classes are canceled Monday at Clark College in anticipation of a potentially violent demonstration from far-right group Patriot Prayer.  The Vancouver-based group plans to hold a demonstration on campus Monday to protest Washington state's Initiative 1639.  The initiative would put new restrictions on assault rifle purchases.  Clark College says they've canceled all operations on campus for Monday and that the school would be closed.  The Patriot Prayer group plans to hold another demonstration Tuesday at Washington State University Vancouver.  The university says it will remain open but that students would not be penalized if they elect not to go to class.