When talking about minorities and gender bias in hiring we are barking up the wrong trees. Hiring is of one of 3 kinds:
1) Tech companies (usually) hire you if you are a good professional. (Otherwise their products fail.) 
2) Some (usually large) places hire you if you played football/golf/rugby with the right people (or with the sons of the right people).
3) In some places the HR people play God and hire those who give the right answer to silly questions (what colour would you be if you were a tomato...) that have little to do with the job you will have to do.