> I think the genocides of the XX century completely negate Pinker's entire thesis. I am not saying there were no genocide before, but I do not see a downward trend
Sure, but I think you need to do a more detailed analysis that goes beyond "look at these horrible things that happened in the last 100 (or 400) years!" On the face of it Pinker's claim indeed seems very counter-intuitive, but sometimes counter-intuitive things are true. Pinker may very well be wrong, but I wouldn't dismiss his argument quite so quickly from my armchair.
Sure, but I think you need to do a more detailed analysis that goes beyond "look at these horrible things that happened in the last 100 (or 400) years!" On the face of it Pinker's claim indeed seems very counter-intuitive, but sometimes counter-intuitive things are true. Pinker may very well be wrong, but I wouldn't dismiss his argument quite so quickly from my armchair.