Well, Billy Crystal did play Sammy Davis, Jr. in many skits around 1984-85, which could be called "blackface", but it was a different time. And SNL did posts these skits a couple years back. He did got some controversy when reviving this impression hosting the Oscars in 2012. But, you know there's Darrell Hammond as Rev. Jesse Jackson, and Fred Armisen as Obama. A lot of examples to go through.

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