Morello said that by buying 'Killing In The Name', fans are effectively voting against The X Factor and other reality TV programmes like it.
"The one thing about The X Factor show, much like our own American Idol, is if you're a viewer of the show you get to vote for one contestant or the other, but you don't really get to vote against the show itself until now," he told BBC 6Music.
He added that he felt the campaign – which currently has over 800,000 members on Facebook – was a "wonderful dose of anarchy" and "heart-warming".
Rage Against The Machine, performing Killing In The Name Of live from Los Angeles, as broadcast live on Radio 5Live on the morning of 17th December 2009. Includes video footage of the live perform...