Rage Against the Machine singer Zack de la Rocha will head to Geneva, Switzerland, next week to address the United Nation's International Commission of Human Rights about the case of convicted killer Mumia Abu-Jamal.De la Rocha will also use his speech on April 12 to discuss America's use of the death penalty with the commission, which agreed to hear the vocalist at the behest of the Humanitarian Law Project, a non-governmental group that consults the U.N. on worldwide compliance of human rights laws. Rage Against the Machine has been a staunch vocal supporter of Abu-Jamal, the Philadelphia journalist sentenced to die for killing a police officer back in 1981, over the last few years. The group has performed a pair of benefit shows to raise money for Mumia's legal defense. The first concert was held in Washington, D.C., in 1995, while the second concert was held earlier this year in East Rutherford, New Jersey (see "The Show Goes On:
Rage Against The Machine, Beasties Mix Music, Politics At Benefit").