Pittsburgh punk quartet Anti-Flag tend to catch a lot of shit for being sloganeering and didactic, but that's mostly from grown-ups and magazine editors. If hip-hop is the CNN of the streets, as Chuck D once said, then Anti-Flag is the Pacifica of the cul-de-sac. Like the majority of their fans, the group is young, angry, Mohawked, and white, with a dogged hatred of authority and firm convictions about what's fair and what's not. Though their seventh album and major-label debut, For Blood and Empire (RCA), features cover art that harks back to the Reagan era, its messages are explicitly of the here and now. Most of the songs, with titles such as "Depleted Uranium Is a War Crime" and "Project for a New American Century," are about the U.S. invasion of Iraq. It's their best effort by far, righteously thriving on discontent and pick slides, with tight, puncturing riffs that are half UK snot and half Gilman fist in the air. The Casualties, Unseen, Smoke or Fire, and the A.K.A.s open. Fri 4/7, 6 PM, Logan Square Auditorium, 2539 N. Kedzie, 773-252-6179, sold out. All ages.