The term 'crimes against humanity' is contextually ambiguous because of variation in the meaning of 'humanity', which originally meant the quality of being human (first recorded in 1384) but more recently took on another meaning as a synonym of mankind (first recorded in 1450). The context of the term in documents related to the Nuremberg trials shows that the original sense is intended.
https://en.wikipedia.org/wiki/Crimes_against_humanity