Most of othe criticism of Obama was based on his policy ideas. Of course there was a fringe element which hated him for a variety of reasons. But, like I said, that was a fringe element.
The current hate expressed by the left represents the mainstream of the Democratic Party. It's unprecedented.
As far as Hillary was concerned, she did inspire more personal hatred directed against her. There's a reason for that. She is not a likable individual. She had a history of ruining people.