These lists are written by very young, not movie knowledgeable people, like the comedy movie list posted yesterday.
No SOYLENT GREEN?
No CHILDREN OF MEN?
No THINGS TO COME ( 1940 movie, from a book my H.G. Wells )?
No TIME MACHINE? I could go on and and on; but then, I love movies and am knowledgeable!
I left out a couple of the movies from the Silent era, because they were futuristic, but not exactly Dystopian.
CHILDREN OF MEN was a great book and very bad film.