McKinsey or its partners have been directly involved in Enron, Valeant, and now an opioid crisis that's claimed thousands (if not millions of lives).
"In for a penny, in for a pound" - this should be McKinsey's new corporate slogan.
Valeant article: https://www.ft.com/content/0bb37fd2-ef63-11e5-aff5-19b4e2536...
Enron article: https://www.theguardian.com/business/2002/mar/24/enron.theob...