I also heard that although 6 are being interviewed, the referee who finished 6th is not one of them.
If this is the case then I am absolutely for equality but this cannot be right and would be purely positive discrimination.
This is exactly what the Rooney Rule proposes in order to give opportunities to ethnic minority candidates - an guarantee that at least one such person will be interviewed to offset any (perceived or real) prejudices faced along the way. It doesn't guarantee a job; just the chance to be considered.