https://www.cnbc.com/2017/08/15/google-diversity-training-slides-prohibit-debate-promote-secrecy.html

Google's diversity program discourages debate on the topic of bias and encourages employees who participate in anti-bias training to keep details of the sessions secret, according to slides for leaders and participants of one such session used by the company.

At least two of the slides back up some of the claims by fired engineer James Damore, who after attending such a session wrote a memo calling Google "an ideological echo chamber where some ideas are too sacred to be honestly discussed."