McKinsey is also very involved in french scandals. There's many investigations in France about corruption with Macron and his close associates. More recently, the Atos scandal (going from 7B€ valuation to 230m€ in a few years) also has McKinsey involved: french newspaper Blast claims they received over 150M€ in consulting fees.

I just read their "Controversies" section on Wikipedia and i still can't believe you can go to jail for selling weed and these people walk free (and rich):

https://en.wikipedia.org/wiki/McKinsey#Controversies