(Corvallis, OR)  --  A man seen as a fixture in Oregon's white nationalist movement is hospitalized.  OregonLive reports that Jimmy Marr suffered a medical event in Corvallis Monday during a clash with anti-fascist activists.  Police say four people were arrested on suspicion of disorderly conduct and later released.  Marr is known for driving his white pickup around the state, with racist and anti-Semitic messages splashed on its sides.