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Hip hop mogul Russell Simmons bashed his "old friend" Donald Trump in a letter to the GOP presidential candidate expressing his disappointment about Trump's recent comments about not allowing Muslims into the U.S.

"Over 30-plus years you have been an amazing friend; endorsing my books, coming to my shows, flying me on your planes, your helicopters, and even allowing my family members and myself to stay in your house in Florida many times," Simmons wrote on his website, Global Grind. "So, it kind of pains me to know that my public statements about your candidacy have strained or ruined our friendship. However, the fact is, what's at stake is bigger than us."

Simmons brought up his role as the chairman of the Foundation for Ethnic Understanding, a group "dedicated to strengthening relations between ethnic communities," according to its website.

The Def Jam co-founder recounted an anecdote about putting Trump on the phone with a "Rabbi Schneier" and setting up a meeting with the Islamic Society of North America's chairman on another occasion when Trump made derogatory remarks about Muslims.

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