"Killing in the Name" was the first single released by Rage Against the Machine from their eponymous album, and is one of the band's signature songs.
On 31 August 1999, it was reissued together with two previously unreleased tracks, "Darkness of Greed" and "Clear the Lane". Note that the name is not "Killing in the Name Of", a common mistake due to the lyrics of the song.
The lyrics allege that some members of law enforcement in the United States are also members of Ku Klux Klan: "Some of those that work forces are the same that burn crosses". Zack De La Rocha's tone suggests that racism in law enforcement is nothing new yet tantamount to government racism.
The song's verses are built around the same few lines repeated several times, building up a crescendo.
The last line has become rather notorious: "Fuck you, I won't do what you tell me!" shouted repeatedly, most likely referring to the oppressive KKK groups the song is aimed at, but also a message of rebellion to the American government as a whole.