Metallica's headline slot at this summer's Glastonbury is under fire due to frontman James Hetfield's associations with bear-hunting.
The heavy metal group's booking had been met with controversy due to their sound not fitting the typical "hippy" vibe of the festival.
Now, the band's co-founder, a member of America's National Rifle Association, is set to narrate an eight-part TV series called The Hunt, documenting the killing of Kodiak brown bears in Alaska.
News of the show has been met with outrage from animal rights activists, with an online petition demanding that Metallica be removed from the Somerset festival's line-up.
One angered music fan set up the Facebook page, "Remove Metallica from Glastonbury Festival for their Support of Bear Hunting", which more than 18,000 people have 'liked' since its 25 May launch.