Starship Troopers is a coming-of-age story about duty, citizenship, and the role of the military in society.[43] The book portrays a society in which suffrage is earned by demonstrated willingness to place society’s interests before one’s own, at least for a short time and often under onerous circumstances, in government service; in the case of the protagonist, this was military service.
https://en.wikipedia.org/wiki/Robert_A._Heinlein
The difference between a Citizen and a Civilian.
The Citizen has EARNED THE FRANCHISE BY DEMONSTRATING HIS OR HER WILLINGNESS TO PUT THEIR LIVES IN HARMS WAY TO PROTECT THE BODY POLITIC.
Not to many gimmeedats would ever earn the franchise, I paid for mine 67 to 72.