“Psychosocial” is a song about hate for life and broken society. It’s the second single from All Hope is Gone and was nominated for the 2009 Grammy for Best Metal Performance, losing to Metallica’s “My Apocalypse.”

In the video for “Psychosocial,” Slipknot burned the “purgatory masks” that they had revealed for during the promotion of the All Hope is Gone album in 2008.

That was a Shawn Crahan idea. Those are Mardi Gras heads of our faces from the death masks we wore in the ‘Vermillion’ video. It’s just a teaser, but it’s totally genius. When I first heard about it, I was like, ‘Are you fuckin’ kidding me?’ But then I saw the results, and I was like, ‘I totally get it!’ He’s got a good vision, man; he’s a great artist.

—Joey Jordison

More or less, we have these giant masks that we’re wearing, called ‘purgatory masks.’ They’re like giant death masks, and they represent ego.

—Shawn Crahan