Lil Durk's "52 Bars" series, since its inception in fall 2012, has been a showcase for the rapper who generally prefers bluntness to flex his lyrical side. (If you've missed any: Part 1, Part 2, Part 3.) Today he unleashes his latest, which seems to sting with extra venom. He rails against Twitter thugs and rival gangs and claims to have not made a million yet, though he still manages to get in a slyly self-aware joke about his penchant for Auto-Tune. "52 Bars Pt. 2" is still the series' high point, but this comes awfully close.