Whilst watching a movie called 'Equilibrium', a flag was displayed fluttering in the breeze near the start of the film. It only appears briefly, but you do get a nice clear view of it. It appears to belong to a fictional 'future' country named 'Libria'.

Looking at the flag, it seems to be the usual lazy movie effort where fascist or totalitarian type states are involved. A red background, white centre circle and a black 'swastika' variant cross in the centre.
Dan Taylor, 21 November 2003

This photo confirms that the cross is not rotated to be a saltire, as the stamp on some props might suggest. On the commentary track of the DVD, the director says:

I didn't want it to be a swastika. In fact, the symbol of the Tetragrammaton, which is the four Ts[...]

On this image (an actual screen capture from the movie), the flag is shown quite well.
António Martins-Tuválkin, 8 November 2005