I disagree.   People hate the man because of his personal behavior, their perception of his character or maybe they feel insulted when he, well, insults and degrades those who disagree with him.   It's pretty much what goes around comes around.     

No election, (is this your first one?), suddenly makes everyone change their values to fit the winner.   
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I'm polite.  That was taught to me by my parents and my faith.   Respect for others is a family value.

Your own tone of voice/behavior is the Only thing you can control.