"Closer" features a heavily modified bass drum sample from the Iggy Pop song "Nightclubbing" from his album "The Idiot". Lyrically, it is a meditation on self-hatred and obsession, but to Reznor's dismay, the song was widely misinterpreted as a lust anthem due to its chorus, which included the line "I wanna fuck you like an animal". The music video for "Closer" was directed by Mark Romanek and received frequent rotation on MTV, though the network heavily censored the original version, which they perceived to be too graphic. The video shows events in a laboratory dealing with religion, sexuality, animal cruelty, politics, and terror; controversial imagery included a nude bald woman with a crucifix mask, a monkey tied to a cross, a pig's head spinning on a machine, a diagram of a vulva, Reznor wearing an S&M mask while swinging in shackles, and of him wearing a ball gag. A radio edit that partially censored the song's explicit lyrics also received extensive airtime. The video has since been made part of the permanent collection of the Museum of Modern Art in New York City.