Sun Records is not avoiding the reality of discrimination that was present in the 50s.
I've been to the actual Sun Studio in Memphis twice, took the tour both times. My 28 YO son even enjoyed it.
I've been a big fan since I saw "Million Dollar Quartet", based on the jam session on 12/4/1956 with Elvis, Johnny Cash, Jerry Lee Lewis, and Carl Perkins.
Six was very good. It's coming back for a second season.