Seconded a thousand times.
Callahan’s Law: “Shared pain is lessened; shared joy, increased—thus do we refute entropy.”
Ursula K. LeGuin’s book “The Dispossessed” had a lot to say about capitalism and socialism.
Heinlein’s “Starship Troopers” has a lot to say about how governments manipulate people … much more subtly and intelligently described than in the movie based on the book, and I thought the movie was pretty good.
“Weapon Shops of Isher” deals with the limits of government control.