Watch Tom Morello Premiere His Michael Brown Protest Song 'Marching on Ferguson'

Tom Morello, 2014.

Tom Morello performs during a benefit concert to help defeat Proposition 32 on the State of California’s November election ballot at Nokia theatre in Los Angeles, California October 3, 2012. 

Performing as the Nightwatchman, Rage Against the Machine’s Tom Morello premiered his Michael Brown-inspired protest song “Marching on Ferguson” on a Sept. 5 show at Los Angeles' Ford Theatre.

Check out the video below to see Morello rock out the bluesy, two-minute track with his three fellow bandmates:

The Los Angeles show was a benefit for the Jail Guitar Doors foundation, which rehabilitates prisoners using musical instruments. The second annual benefit also featured Ben Harper, Jackson Browne, and White Fence, among others.

Morello shared the Instagram below to mark the occasion:

Morello is currently working on a Jimi Hendrix-inspired solo album, which he plans to release under his own name. His last release as the Nightwatchman came with 2011’s World Wide Rebel Songs.

Check out Billboard’s roundup of musician reactions to see how Morello and others -- such as J. Cole, Killer Mike, and John Legend -- responded to the events in Ferguson, Mo.