“The Last of the Deliverers,” Poul Anderson, 1958 — Two societies clash, one Marxist and one capitalist.
Comments: Anderson’s comments in the Afterward speak of humanizing the enemy, the depiction of politics in sf, readers calling out writers. Perhaps interesting for the commentary. Read in SF: Author’s Choice by Harry Harrison.
Author: Wikipedia: “Poul William Anderson (November 25, 1926 – July 31, 2001) was an American science fiction author who began his career during one of the Golden Ages of the genre and continued to write and remain popular into the 21st century.”