'We have your backs': CNN President Jeff Zucker rallies reporters after Trump's attacks on Jim Acosta
CNN's Jeff Zucker (Wikimedia Commons)

CNN President Jeff Zucker attempted to rally the network's reporters after Donald Trump attacked White House correspondent Jim Acosta during a post-midterms press conference.

"I want you to know that we have your backs," Zucker said a memo to employees that was obtained by The Hollywood Reporter. "That this organization believes fiercely in the protections granted to us by the First Amendment, and we will defend them, and you, vigorously, every time."

In the president's first press conference of the day on Wednesday, he called Acosta "a rude, terrible person" after the reporter grilled him on insistently calling the Latin American migrant caravan in Mexico an "invasion."

"CNN should be ashamed of itself having you working for them," the president said. "You are a rude, terrible person. You shouldn't be working for CNN. You're a very rude person. The way you treat Sarah Huckabee Sanders is horrible. You shouldn't treat people that way."

Zucker wrote in the memo that Trump's "ongoing attacks on the press have gone too far" and "are disturbingly un-American."