The Left hollers for that which enslaves and kills them the most.
WWII was arguably the first Socialist world war in which two countries committed to ridiculously unworkable economic and political ideas set off on a massive looting and killing spree across Western and Eastern Europe. The Nazis shipped the loot back home, practicing a familiar form of wealth redistribution by turning over stolen property from conquered countries to their own people as the spoils of war while funneling much of the rest into the corrupt machinery of the Nazi Party. The Communists were less generous with their people, but plenty of Russian soldiers still brought home unknown luxuries from the formerly prosperous capitals of captured countries.
Few myths are as beloved among liberals as the idea that wars could be put down to a conspiracy of defense contractors. Throw together Haliburton, Northrop Grumman and GE along with some retired generals and you have the makings of your next war.
The fabled military-industrial complex was a dimwitted descendant of the WW1 era Socialist notion
that wars were the product of industrialists and without them, the working peoples of every country would naturally get along. Then came WW2, which was fought between a Communist empire, a National Socialist oligarchy, a Socialist American government and a Britain that would kick out Churchill as soon as the war was over and swap him out for Labour and the Socialist dream.
None of these Socialist or aspiring Socialist systems could get along. The Nazis and Commies had started out by looting their own citizens, the Nazis based on religion and ethnicity, and the Commies, based on these things and a thousand others, and the mere existence of wealth, and when all that money was gone, and the paintings were sold and the only hope lay in sending tanks across the border, went to war.