(CNN) Nearly 50 years after his father's assassination, Martin Luther King III said Monday that he believes President Donald Trump's vulgar and demeaning language to describe immigrants from Africa was "extremely racist."

"I think that the President has got to be engaged in some sensitivity and heart changing," King said on "Chris Cuomo Prime Time." "When I say heart, we've got to appeal to his heart because there's something wrong -- it seems to me -- when you make comments that way."

King, who is the president and CEO of Realizing the Dream, a nonprofit dedicated to continuing the legacy and unfinished work of his parents, stopped short of labeling President Trump a racist.

"Some may go further and say he is a racist, what I am saying is his comments were extraordinarily racist," King said.

Asked about his niece Dr. Alveda King's comments defending the President, King said "no family is monolithic" and that he would push back on her claims that Trump follows Dr. King's teachings.

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