Things got better after unified monarchies ordained by God superceded quarreling petty kingdoms. Things got better with constitutional monarchies with aristocrat parliaments. Things got better with suffrage and classic liberal democracy.
Each system has its limitations and contradictions, and each of them were superceded when those became incompatible with the current reality.
You have to look for movies made during the war to get the spicy stuff. Most famously, The Green Berets, a movie so bad that when they showed it to marines in Vietnam, they wanted to go back to work. Roger Ebert gave 0 stars, bless his soul.
My favorite shamelessly openly propaganda movie is Red Dawn, the one about a ragtag team of teenagers guerilla fighting off a joint invasion of the US by the USSR and Communist Latin Americans. Wolverines!