The Progressive Left dislikes Christopher Columbus and the Spanish Conquistadors. But it’s good to remember that this sort of thing was endemic in much of the New World. The Europeans were horrified to see the practices of the Aztecs and other peoples. The judgment of the Europeans at the time matches your judgment today: “These are not human beings, these are devils from the lowest bowels of hell walking on earth.”
That type of behavior was pretty much true with all the tribes. The Aztecs used the power of an organized society to do it on an industrial scale. Stone age societies do that sort of thing.
They are and this is not any exaggeration. The guy who runs that website told me the videos from Mexico are by far the most violent and vicious. Nowhere else do you get it on that level in such abundance even from the middle east. He has a few videos of ISIS killing, but nowhere near on the level of what is coming out of Mexico and without question these Mexican drug gangs are here in the USA. The media is completely covering up just how bad it is.