(Portland, OR)  --  Campaign staffers for Democratic presidential hopeful Bernie Sanders say his speech at Portland's Moda Center drew 28-thousand people, a record crowd for his bid to be the nominee.  Yesterday's rally was originally scheduled for Veterans Memorial Coliseum, but was moved to the Moda Center because a larger crowd was expected.  Sanders, who's an avowed socialist, told supporters that income inequality is the "great moral issue of our time" and pledged to continue taking on the "billionaire class."