A large pic of the Atlanta Symphony does not show that many black faces:
http://www.scaddistrict.com/savmusicfest/files/2011/04/ASObyartist.jpg
Perhaps they should themselves be required to reflect the demographics of Atlanta?
In that picture I can spot only two. One on the bass violin and one in the horn line on the back row. I see several orientals. Maybe the H.S. chorus is not diverse because it is not white enough. /s
It also appears to be mostly men so the symphony fails on the diversity standard in many ways. BUT they definitely qualify as the most hypocritical.