Read this:
Or this:
If I ever should write a book creating a conspiracy, it won't be the CIA, that's real stuff right out there and as bad as it can get after Auschwitz scoring second place straight.
It would be about the real human races that are only three of which all come in many different shapes and colours. The majority known as the homo sapiens, largest in numbers and the officially only one, but than there are also those we know as many people such as the Mayans, parts of Ancient Rome or the Nazis, much older than the homo sapiens lacking what normal humans would call empathy or the ability to love. The main difference is their tissue healing slower, making them more mortal and their brain missing those parts completely responsible for advanced social interactions turning them in larger populations in rat like societies enslaving others. They miss one rip and the lowest one can be easily pierced into their lung by the latest of those three races. Stronger in bone structure, quicker recreating tissue and with a way higher developed brain enabling that race to move faster, create more energy and feel on an almost paranoid level being able to predict thoughts and actions after quickly studying especially the oldest other race.
Of course these two would be at war over the destiny of world domination since a ship landed in a new world. Slavery Or Freewill.
I just don't like Fantasy as much as Sci-Fi...