Saying that many of those who support Trump aren't racist or sexist isn't the same as saying Trump isn't racist or sexist. Plus, it's not like saying those who support Trump are horrible worked out too well for Clinton. Even if you believe that most of Trump's supporters are racist, that's not something you should explicitly say as a candidate.
Tweeting out anything right before the election that even implies that it is ok to vote for the opposition is wrong. Sanders is not that stupid.
Saying that it's okay to vote for the opposition =/= Saying that people who do aren't racist or sexist
Maybe if Hillary had learned the same thing and humbled herself, she would be president right now.
Why was it necessary for him to say that? Voters know what their intentions are and don't need a politician to tell them anything. It was just an odd thing to tweet right before any election especially from someone who never really conceded that they lost the primary.
I don't know, I don't live inside his head. Why did Hillary call her opponents' supporters deplorable?
Because some are deplorable. In that full speech, she specifically singled out racists, sexists, homophobes and xenophobes. Whether it's stragetically smart or not is another question (obviously it's not that much), but Trump constantly mocked and insulted other people. Her remarks are hardly a big deal compared to Trump's disgusting behavior. Also, if she was elected, I'm sure she would have tried to represent to whole country, where Trump has made zero efforts to reach out to anyone not 100% in line with him.