Just two weeks after Rage Against the Machine frontman Zach de la Rocha teased the possibility of his band playing a US date in protest of the recently passed Arizona immigration bill, he has made it official. On July 23rd, the acclaimed rock outfit will team up with Conor Oberst and the Mystic Valley Band for a massive benefit concert at the Hollywood Palladium in Los Angeles, California. The concert will mark Rage’s first US date in nearly two years and first proper Los Angeles show in a decade.

Of course, it isn’t too often Rage Against the Machine and Conor Obsert on the same bill, but there’s good reason for it. As previously reported, de la Rocha is the leader “Sound Strike”, a campaign advocating that bands boycott Arizona until the aforementioned bill — SB1070 — is overturned. Oberst is a vocal supporter of the campaign and has already scheduled a separate benefit concert to be held in Nebraska.

Tickets for the event have not yet been announced, but all proceeds will go toward “Sound Strike” and its corresponding “Sound Strike Fund”. According to an issued press release, these proceeds will provide “much needed resources to community organizations, student groups, legal defense funds and assist activists targeting key voting districts for voter registration.” Update: Tickets — priced at $50 — will be available Monday, July 19th at 10:00 AM PST via Livenation.

We’ll update you when more information becomes available.