Donald Trump is priming the pump when it comes to his “dehumanizing” language, an authoritarianism expert said on Saturday. New York University professor Ruth Ben-Ghiat appeared on CNN Newsroom with Jim Acosta, where she was asked about comments the former president made earlier in the day. Specifically, Trump once again said that migrants are “poisoning the blood of our country,” repeating language purportedly used by Hitler and other dictators. “You’ve studied fascist rhetoric, you and I have discussed this many times. What was your reaction when you heard Trump say this earlier today?” Acos…