Galactic Republic
Quite possibly the comic's most controversial story was published in issue 18 in 1953. "Judgment Day" featured an astronaut who comes to a planet populated by orange and blue robots who hope to join the Galactic Republic. As he tours the planet, the astronaut, named Tarlton, realizes that blue robots are treated horribly and given fewer rights than the orange robots, despite the fact that they are identical except for the color of their exterior. Tarlton decides that because of this, the planet will not be allowed in the Galactic Republic. In the final panel Tarlton removes his helmet, revealing that he is black. This story was chosen for reprinting approximately three years later in "Incredible Science Fiction", which resulted in an argument that caused Gaines to quit comics altogether.