Somewhere...
...is a company that hires the sort of people not generally hired elsewhere. Dalits, blacks, women, evangelical vegans...
In return for offering average wages they get the most capable candidates and have crazy-low staff turnover because no one wants to poach their staff.
So integral is this practice to their business model they actually seek to perpetuate racism and other discriminatory practices, planting hate stories in the tabloid press, recruiting actors to phone talk-radio and funding politicians who divide the electorate.
Seriously though, a decent recruitment process would probably start with tests to sort the wheat from the chaff and largely abandon the interview.
Make the recruitment objective and focused on testing for the skills or aptitude needed to do the job.
Discrimination becomes almost impossible.
It does, however, need management that can discern what abilities are needed and who are able to devise appropriate tests.