If anyone of us had evidence of this the cat would be already out of the bag, so unfortunately I don't. There is however evidence that selection is deeply flawed, so I wonder why the same criteria that would have me sacked in no time by any company HR department if I behaved as such can't apply there. Racist violent people aren't usually that smart at hiding it, I know some of them and usually 30 minutes of chit chat is more than enough to expose their ideologies and how wrong would be to give them that power.