Social Class Struggle in Chess?

Boing Boing recently posted about this 1934 Modern Mechanix article discussing a Depression-era variation on chess that apparently pits the workers against the capitalists.   The original article describes the game as

a newly simplified form of the game of chess [that] has for its game board the Modern World, and for its pieces Farmers, Mechanics, Engineers and even Agitators struggling against forces symbolized by opposing Armies, Bankers, Radio, Press, Law and Middlemen trying to become Bankers.

"Chess pieces of the world, unite!"?