New York (CNN Business) Joseph Azam joined Rupert Murdoch's News Corp in 2015. He says he loved working there. But after the presidential election, he noticed a disturbing "change in tone."

"I was fine with working with and for people who had different values and opinions than I did, but I noticed a significant shift in the ferociousness and, frankly, in the relationship with facts, you know, particularly on the Fox side," Azam said.

As President Donald Trump took office, "it became very profitable to kind of fall in line with an anti-immigrant, anti-refugee, anti-Muslim rhetoric," he said. "And I was affected by that."

Azam, an Afghan-American immigrant, eventually had enough. He resigned in late 2017. He recounted the ups and downs of working for the Murdoch media empire on CNN's "Reliable Sources" on Sunday.

Azam was a senior vice president in the legal department at News Corp, the half of Murdoch's house that includes the Wall Street Journal and other newspapers. Fox News is part of the other half. But both sides came together in the New York City tower where Azam worked. He said he interacted with Fox hosts in the elevators, for example, "so I was exposed to it every day."

Read More