"I want to make a movie so painfully obvious in its satire that everyone who understands it lives in perpetual psychological torment inflicted on them by all the people who don’t."
Paul Verhoeven, director of Starship Troopers
The movie makes it clear that:
The bugs were responding to human colonization
Humans fired the first shots
The government is lying to everyone claiming the bugs are mindless. They overjoyed shouts of the soldiers when they learn the opposite is true - is only because they learn that the bugs are terrified.
The endless over the top propaganda is supposed to be a pretty fuckin heavy clue that it’s a fascist state.