Z, dir. Costa-Gavras, 1969 (Wikipedia entry)

"As the closing credits roll, instead of listing the cast and crew, the filmmakers list the things banned by the junta. They include: peace movements, strikes, labor unions, long hair on men, The Beatles, other modern and popular music, Sophocles, Tolstoy, Aeschylus, Socrates, Eugene Ionesco, Sartre, Chekhov, Mark Twain, Samuel Beckett, the bar association, sociology, international encyclopedias, free press, new math. Also banned is the letter Z, which has been scrawled on the sidewalk as the film's final image, as a symbolic reminder that "the spirit of resistance lives."