"The Left" doesn't hate Hillary. That's way too general. Black and hispanic "very liberal" voters supported her overwhelmingly, as did black-and-hispanic-oriented politicians, unions, and advocacy groups on the left of the party.
So, clearly, lefties don't hate Hillary. White lefties hate Hillary.
And they hate her because Hillary's campaign a). ignored them and b). proceeded to prove that America has changed demographically to the extent where you can easily win the Democratic nomination while ignoring them.
To quote yourself, "That's way too general."
A great deal of nonwhite voters, organizers, and organizations were very vocal in their opposition to Hillary Clinton, and it's pretty shameful to just cast that aside in your generalization. Clinton locked down a far greater number of establishment/governmental endorsements (like the CBC) because she represents the status-quo they wish to retain.
Obviously the majority of minority voters went with Clinton, but (looking at 2008) much of that seems to be more of an (understandable) anti-Sanders vote than a pro-Clinton one: chiefly due to the former's ineptitude dealing with issues unrelated to the economy and inability to put out a passable multi-pronged message. ie; a candidate who says, "When you're white, you don't know what it's like to be living in a ghetto," as a means to attract nonwhite voters is not going to win over any nonwhite voters.
