Street Sweeper Social Club, aka Tom Morello and the Coup's Boots Riley, are opening for Nine Inch Nails and Jane's Addiction's NINJA tour, and on Sunday, NIN's Trent Reznor hopped onstage with the group to do a raucous cover of the MC5's "Kick Out the Jams" with Reznor on lead vocals. This is what you always hope for when big bands tour together. [Pitchfork]