sometimes i like to use whiteman instead of whitemen.
because for men, the individual, is most important, in human animal society.
so, sometimes when referring to male human, i say man.
man, makes men. not men.
while the women, the pussy sex, also has a interesting linguistic issue.
the female human animal, as a group, is not individualistic.
however, they do have a special age thing.
so, women, is usually referred to as girls.
especially by women.
in summary, if u want to emphasize the human quality, u can write man instead men to refer to the male human animal, and write girls instead of women to refer to the female sex.