If I recall, Jimi Hendrix also used the Confederate flag as a backdrop.
I don't remember, but Jimi was something else. (Hey Joe)
Back in the 60's I had a friend who could play the guitar, but he had to be stoned to do so. Perhaps that's why Clapton went in for the blues for a while. Could be when he got sober he couldn't play a lick, but could remember the cords to the blues. ;)