Except for the 'entertainment' on the stage.
Hey, you can attract a huge crowd of misfits with free booze and music, no matter how atrocious.
The Roots: Black musicians, white fan base
Jeff Tweedy: White musician, white fan base
Mavis Staples: Black singer, white fan base
Sheryl Crow: White singer, white fan base
Bruce Springsteen: White singer, white fan base (supposedly the surprise guest)