Glen Wilson / Via Courtesy of Sundance Institute Produced by Ryan Coogler, the second feature from Shaka King is a formidable work of art. A late addition to the Sundance lineup, the film stars Daniel Kaluuya as Fred Hampton, the young chair of the Black Panther Party’s Illinois chapter, and Lakeith Stanfield as William O’Neal, the undercover FBI informant who joins the group and betrays them. Kaluuya carries a grounded gravitas and is nothing short of sensational in his tour de force portrayal of the charismatic activist. Meanwhile, Stanfield’s chameleonlike nature serves his frantic character well here; it’s hard to pin down where his head’s at as he scrambles to survive. Throw in a handful of other notable performances (courtesy of Dominique Fishback,