Here's how the thinking goes; Trump is Hitler II for being mean to Muslims who had to sit through a delay at the airport (hate crime to begin with if you ask me) and will be vetted and allowed in soon enough which is not exactly an internment program NOR much of a ban and, further this new Hitler is being mean to people who were on the REAL Hitlers side, people who shared the real Hitlers disaffection with Heebs. Heebs being the people Trump seems to be having a mutual admiration society relationship with.
Further, Muslims are socially conservative. Some VERY much so. So, social liberals hate Trump, another social liberal, for being mean to people who aren't exactly friends with social liberals. Witness Orlando.
So, in effect, they hate him for, basically, trying to protect them from themselves.