IMO, the people who despise and hate Trump are the people who watch mainstream media news coverage and late night talk shows, and actually believe all of it. Day after day, week after week, month after month, they're told Trump is a baby, liar, dictator, liar, man-baby, liar, authoritarian, liar, Putin puppet, liar, small hands/penis, liar, deranged, liar, unhinged, liar, senile, liar, evil, "literally Hitler," Stalin, liar, liar, liar....and on and on and on. So if you watch that long enough, you start believing it. It's only natural. You become as filled with hate as they want you to be. The media wants the public to hate Trump, so a certain amount of people will be persuaded/brainwashed to hate him, and hate him to the point of living in despair, screaming at the sky, throwing shoes at videos of him, rioting, etc.