In my opinion, homosexuals whether greros or gays have been quietly making significant contributions to all societies.
Given that probably most males in ancient Greece and Roman engaged in same sex sex, that's not in dispute, at least on this site. :-)
I don't know when the hatred all started with the early Christians or Catholic church, but I think somewhere in the Middle Ages.
I did not include this in the book, but when states become bigger and richer, during the Middle Ages, there was more prosecution of same-sex sex. Before then, everything was a lot more decentralized so you couldn't have a single ruler issuing this and that. With that said, persecution of same-sex sex began right after Christians took over Rome, especially by Theodosius after 390. That's in Chapter 10:
http://grero.com/#_Toc347564552Recently, I saw the movie, "The Imitation Game" and found it very interesting. A great, homosexual mind invented the computer, so to speak. My computer is acting up a bit so I will close this post for now. Peace to all!
I've heard about this movie, so now I'll have to see it for sure.