While Capitalism might be relatively new in the history of humanity, greed isn’t and and in many ways Capitalism can be argued to be just greed as a virtue.
Now greed, that in many ways has been described as the root of all evil. Yes, there are arguments about Pride being worse or more fundamental, but greed is persistent and eternal in how often it comes up.
To be fair, the kind of people the meme is making fun of tend to map pretty closely to the domestic terrorists that go on mass shootings because they have to interact with anyone other than a cis white male.
So the picture being of an actual war criminal kinda works, in a dark way.