Inclusive language is a problem. This is a link to a useful explanation of the question of mankind and humankind. As I say in A Guide to English Language Usage:
Mankind means people in general. In Old English man meant a person of either sex as well as a male person; it is still sometimes used in this sense, but less frequently now. Despite this, some people prefer the word humankind as being non-discriminatory while others object to it as a hybrid compound. Here kind is a noun meaning race or family; it is connected to kin and has nothing do with kind as an adjective.