If you want to discuss Irving Berlin and racism, you should consider this:

In 1933 Berlin wrote "Supper Time" for his topical revue "As Thousands Cheer". It was the first song about lynching, some years before "Strange Fruit". He got Ethel Waters to perform it on Broadway and she was deeply impressed:

"If one song can tell the whole tragic history of a race, 'Supper Time' was that song. In singing it I was telling my comfortable, well-fed, well-dressed listeners about my people" (Waters, p. 222).

Berlin and producer Sam Harris even sent the whole show including "Supper Time" and Ms. Waters on tour down south, "the first time a colored person had been co-starred with white players below the Mason-Dixon line" (Waters, p. 224).

From here" Irving Berlin's "God Bless America" Oh, and here's the song" Ethel Waters sings "Suppertime"