[wsj-responsive-image P="http://si.wsj.net/public/resources/images/BN-ML827_Sander_P_20160205083034.jpg" J="http://si.wsj.net/public/resources/images/BN-ML827_Sander_J_20160205083034.jpg" M="http://si.wsj.net/public/resources/images/BN-ML827_Sander_M_20160205083034.jpg" caption="Democratic presidential candidate Bernie Sanders debates former Secretary of State Hillary Clinton at the University of New Hampshire in Durham, N.H., Feb. 4. Credit: Mike Segar/Reuters" credit="Reuters" placement="Header" ]Sen. Bernie Sanders wants his supporters to knock off sexist attacks against rival Hillary Clinton and her fans — but said there are […]