I Support Lgbt Rights

It's quite worrying (and funny in a way) that those who claim there are only two genders don't even know what the word means.

"Gender" does not refer to male and female, those are sexes. There are more than two of those as well. Dr Anne Fausto-Sterling has identified 5 discrete sexes and believes there may be more. A Google search with "fausto sterling 5 sexes" (omitting the quotes), will provide plenty of reading material for those who wish to learn more.