I think that real reason that they hate him is that Trump exposes all their lies. They say it can't be done or it can't be fixed, and he goes about fixing it and doing it very simply...by standing up to bully's by becoming a bully. Reminds me of Tomestone why Wyatt is in the bar and Johnny Tyler has taken over the bar and ran it into the ground. Wyatt slaps the crap out of him, and kicks his ass out.
The first thing Johnny does is goes and gets a rifle to kill Earp, only to be thwarted by Doc Holiday, and basically told to piss off. Trumps crowds are Doc Holiday telling everyone who is a liberal to piss off. If the Dems step out of line, they know they are dead.