The evil left hates him because he is going to take them down. The useful idiots on the left hate him because they are told to hate him. The idiots can dredge up some minor infractions to their sensibilities, but nothing worthy of the hate they express. It is artificially fomented by the evil “elite”. Right out of the Nazi playbook.
The evil left is going no where. Eventually, they will win. Trump is just a minor speed bump to them and he will be gone in either 2 years or 6 years or so.