Something discussed in the video. Google held "secret" diversity meetings, secret from the perspective of all meetings are usually recorded at Google and made a

Something discussed in the video. Google held "secret" diversity meetings, secret from the perspective of all meetings are usually recorded at Google and made available but these ones where specifically not apparently. James mentions that these meetings where used to discuss (allegedly) illegal hiring practices. I'm not from the US, but as far as I understand what's generally labelled "positive discrimination" isn't just legal, is it not highly promoted? Just trying to understand what could be mean't from illegal if these hiring practices are widespread and encouraged.