We realized they were human beings. They've existed since, approximately, the early Russian Empire.

I'm sure they've existed since the dawn of man...what I'm commenting on is the overwhelming number that apparently exist. Probably all that damn soy milk, not to mention the estrogen birth control pills polluting our water supply!

The documented one's I mean.

Those ones are dead by now but okay. A time wall!

Lol.

human biology book

You just triggered my PTSD from freshman biology...such an awful teacher...

The biology book can be rewritten for the science discovery forwarded by the LGBT.

Neutral, since gender isn't biology, but a social construct. Now a civil textbook would fix this Meme. :| just sayin'.