Alan Moore, the comic book author whose stylised Guy Fawkes-type mask from his V for Vendetta series became a global symbol for Occupy protesters, has cemented his support for the group's aims by writing and recording a record for the UK arm of the movement.

The Decline of English Murder is a gloomy and at times opaque ballad that likens the stark economic inequities challenged by Occupy to the work of a killer. It is released by Occupation Records, the musical spin-off from the protest group, which has already collaborated with Radiohead's Thom Yorke and members of Massive Attack, among others.