BlacKkKlansman (out Aug 16) is based on some “fo’ real shit" and is the story of an African American police detective and his white partner who infiltrated the Ku Klux Klan in the late 1970s. It's a fun, uncomfortable ride and you won't know whether to laugh or cringe at the absurdity of the situation. It's likely to spark debate about how much America has changed… and not changed over the past few decades. Grade: B+.