Posters for The Interview at The Theatre at Ace Hotel, Los Angeles. 17 Dec 2014
Media playback is unsupported on your device

Sony 'forced' to bow to film hackers

4 January 2015 Last updated at 12:08 GMT

Sony Pictures has cancelled the planned US release on 25 December of the film The Interview, after major cinema chains decided not to screen it.

The film is about a fictional plot to kill North Korean leader Kim Jong-un.

Hackers have already carried out a cyber attack on Sony and warned the public to stay away from cinemas screening the film.

The US government said it was considering a "range of options" on how to respond to the attack.

So why's this such a big story?