Many of the left wants Hillary completely off the playing field for 2016. They do not want to deal with her, her husband and all the heavy baggage that is usually overlooked or excused. This could get as vicious as Sunni vs Shia behavior.
I think they may lay the complete Benghazi mess at her feet and “look” really surprised when they do. In my opinion the Dems were in a civil war during nominations to trade black people for hispanics. Something went wrong and Hillary didn’t win the nomination. That war was put on hold while Obama is in office. I keep reading how “divided” the right is but very little on the infighting on the left.