They Live (1988)
If you think about it, John Carpenter's brilliant film They Live is a story about revolutionary martyrdom.
All the primary decisions made by the protagonist, played by professional wrestler Roddy Piper, were motivated by a righteous indignation usually reserved for revolutionaries.
When he first discovers that some of the people around us around grotesque aliens disguised by a shape-shifting ray enveloping the earth, he outright calls them out on the spot. He makes fun of their appearance. He basically signals to the aliens directly that he's aware of their deviant plan. But why?
Letting the alien overlords know you're aware of their deception is kind of a stupid move. You don't know how powerful they are, nor how quickly they can crush you. Plus, regular humans now think you're crazy (even though you're trying to free them too).
In the end, Roddy dies taking out the satellite which makes the alien race look like humans. The one satellite explodes, and now the regular humans can see the alien race out in the open. There's a comedy montage about this going on — and then the movie ends.
Roddy dies the way he lived: Like a revolutionary martyr. Perhaps the moral of They Live is to prevent that from happening by any means necessary.