After three decades of making politically conscious music, one might expect Public Enemy to start challenging their mortality. But at 50, Chuck D, Flavor Flav and Professor Griff haven’t run out of social injustices or music-industry outrages on which to focus their lyrics. Although PE’s biggest exposure in recent years has been Flav’s televised romantic exploits, they still have plenty of rage: The group offers critical commentary on Arizona’s controversial immigration law and the euphoric materialism of mainstream hip-hop. On the other hand, Public Enemy is trying to finance its next album through fan donations on the fundraising website SellaBand.com. Rebirth of a nation, indeed.

PUBLIC ENEMY PERFORMS WITH OCTAVE AND KENDO THE ALMOST FAMOUS AT 8 P.M. AT THE 9:30 CLUB, 815 V ST. NW. $35. (202) 265-0930.

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