Rage Against the Machine singer Zack de la Rocha will join Rodrigo y Gabriela at Morrison, CO’s Red Rocks Friday, August 20. The politically active singer will make a special appearance in support of The Sound Strike. According to Rod and Gab, “The Sound Strike represents a group of artists, including Rodrigo y Gabriela, which have taken a stand for civil and human rights in a collective decision to boycott Arizona and to make a call to other artist to Boycott Arizona due to the passage of the law SB1070. Zach’s appearance in Colorado is especially poignant due to the increased discussion of a similar law in the state of Colorado.” Xavier Rudd and Izintaba will open the show.