Sanders supporters blame Wasserman Schultz for what they see as system rigged against their candidate and say he is being cheated by contests closed to independents and unfair weight to superdelegates.  

"I think I'm honestly starting to hate @DWStweets more than @realDonaldTrump," one Sanders supporter tweeted on Thursday, with the hashtag #FeelTheBern.

Other hashtags being used by Sanders supporters on Thursday included #DebbieDowner, #DownwithDebbie and #DumpDebbie.

The online anger erupted this week after Wasserman Schultz called on Sanders to get his supporters in line after a rowdy Nevada Democratic convention where Sen. Barbara BoxerBarbara BoxerArmy of Sanders supporters fuming over Wasserman SchultzSanders pans chemical safety reform dealSanders fans plan rallies near Dem conventionMORE (D-Calif.) endured a hearty booing. Wasserman Schultz also criticized death threats and obscene messages left on the voicemail of the chairwoman of the Nevada state party.