Trump called the news media "an enemy of the American People" Heres a history of the term:
. . .Gabriel Sherman, national affairs editor at New York magazine, described it as full-on dictator speak.
. . .
Where did the expression come from? In its original incarnation, enemy of the people wasn't code for enemy of my regime. In one of its earliest uses, the phrase was used to describe a leader himself Nero. The Roman ruler was a disastrous emperor, and a careless one to boot. As his country fell into ruin, strained by construction costs and a massive devaluation of the imperial currency, Nero vacationed in Greece. He enjoyed musical performances and theater. He took a chariot to some Olympic Games. He considered whether to build a canal across the Isthmus of Corinth.
When he got back home, the political class was angry. And he didn't do himself any favors by ignoring a revolt in Gaul. The Senate grew so infuriated that they declared Nero an enemy of the people and drew up plans for his arrest and execution. Nero took his own life after a failed attempt to flee.
The term fell out of fashion among the political class, though it popped up in literature and art. Most famously, Henrik Ibsen wrote an 1882 play called An Enemy of the People. It features a doctor who's almost run out of town because of an article he's written bashing the government. The idea came to Ibsen after his own brush with infamy his play Ghosts challenged the hypocrisy of Victorian morality, and was deemed indecent.
Adolf Hitler was allegedly an Ibsen fan. (Some historians say they believe that he read the plays as prophecy of the Third Reich.) He reportedly read An Enemy of the People closely, even weaving some key lines into speeches. . .
https://www.washingtonpost.com/news/worldviews/wp/2017/02/18/trump-called-the-news-media-an-enemy-of-the-american-people-heres-a-history-of-the-term/?utm_term=.858053a74667&tid=sm_tw