The gay blackface performer who does the Shirley Q Liquor act was interviewed in Rolling Stone for their June issue. You might remember him as the guy who puts on the blackface and drag and enacts degrading stereotypes of black women. He's been protested, etc., but sees no reason why anyone would interpret his act as racist. But he does say this in the interview:
Wealthy white people are starting to hire me for private parties, where I play the raisin in a bowl of oatmeal. From the way they interact with me, I can see that my being there as Shirley makes them feel it's acceptable to openly mock black people in a way they otherwise would not, and that does cause me to have second thoughts. If what I'm doing is truly hurtful, then I need to stop.Gee, ya think? People who hire a blackface performer to tell jokes based on stereotypes of black women might want to mock black people? Oh, heavens!