If you look at the way discrimination was actually carried out a hundred years ago, you'll find that it was primarily done through strong hints rather than thro

If you look at the way discrimination was actually carried out a hundred years ago, you'll find that it was primarily done through strong hints rather than through having policemen standing outside. If a department head is sending out memos that cause middle managers to get the message not to hire black people, that is all it takes. It did not even require 100% compliance, as long as there is a strong headwind at every step of the advancement process, nobody will make it to the top that's not being favored.