Photo by Shigeo Kikuchi, via www.agnosticfront.comNew York City hardcore legends Agnostic Front definitely still bring it: They're still as loud and confrontational as always, even with their wrinkles, gray hair, and degenerating vision. Well-into-their-50s principals Roger Miret (vocals) and Vinnie Stigma (guitar) -- who, inspired by the likes of Black Flag and Bad Brains, formed the band in 1980 -- are still at the helm of the ever-changing lineup. (The band's gone through nearly two dozen me