Hillary Clinton

Bernie. Check out their backgrounds closely. You will find that they have been against Obama about one year less than the GOP Congress. They felt as though he was not black enough, and should have done more for blacks.
On the other hand, when they had a President who did more for them (Bill Clinton..check the record) they soon abandoned him and blamed him for the housing bubble burst because of vulture bankers and mortgage brokers. They blamed Clinton for the aftermath of the crime bill he signed even though many working, middle income blacks were crying out for something to be done to make their neighborhoods safe from the crime, killing, and drug thugs ruining their stable lives and destroying their neighborhoods.l So they blame the Clintons (both Bill and Hillary) for the way law enforcement all over the country abused the justice system and concentrated their efforts on locking up blacks and Hispanics for petty pot possession while whites were not even booked for the same level crimes. But I digress.

All this to say that many of the blacks and Hispanics you see supporting Bernie were basically on their own in coming to the Bernie campaign out of their angst against Obama and the Clintons. Bernie in no way actively sought their support and his original message was focused on white, working class and middle income folks. It really is a modern myth that Bernie began his campaign as a movement focused on helping minorities and women and the poor.