Except that in They Live ideology is imposed by the aliens.
"In the movie's most notorious scene, Nada tries to impose this truth on another person, brawling with Armitage for several minutes in order to force him to put on the glasses. This endless fight scene, possibly the longest in cinema history, is a metaphor for the struggle to achieve enlightenment. "To step out of ideology ... you must force yourself to do it," Zizek concludes. "Freedom hurts.""
But Piper's character didn't have to force himself to put on the glasses. There was no struggle and it didn't hurt.
Zizek is amusing and I agree with many of his left-wing sentiments, but a lot of what he says is pure bullshit, concocted to sound profound with zero substance to it if you think about it for half a second.