People of the Lie - M. Scott Peck - Audiobook - See links in pinned comment.

M. Scott Peck was the Army Psychiatrist who ran / worked on the Myli Massacre... where the US army group (???) killed everyone in a Vietnamese village... and then none of them ever said anything about it... and Bob Earl expanded upon, the issue of, "How many family secrets are you sitting on, that your not even conscious of?"

https://en.wikipedia.org/wiki/M._Scott_Peck

https://en.wikipedia.org/wiki/My_Lai_massacre