by
Dawn Foster
[...] Daring to hire from outside the traditional pool while non-traditional yourself, merely ensures the prejudicial stereotypes applied to your race or gender come back to haunt you.
which makes sense, since minorities who promote diversity are seen as less competent (she cites this study: https://blogs.wsj.com/atwork/2014/07/21/women-penalized-for-promoting-women-study-finds/)