[eaa]

By the way, this is quite interesting! Most events of 20th century were related to ideology. But before that, in old times maybe only religious wars were close to this. Other wars and conflicts were good old attempts to conquer someone and/or to gain resources and power. But was there as much hatred as produced by ideology? E.g. during the napoleonic wars many people died but does someone hate France because of Napoleon? I guess not. Or take WW1, it was only 107 years ago. Surely a lot of people died. Does someone remember it with hatred? Only as a great tragedy I think.

[knuthsat]

I'm pretty sure that you needed ideology to convince people to go to these incredibly long wars. It just gets washed away by other explanations given by the historians.

I mean, does Russia have memorials of their leaders? Germany also has a bunch of memorials even going back to Prussian days. Yet many of these individuals caused massive suffering.