Category IIB.Reviewer's Bias:Loves: Clive Owen, except in “Children of Men”Hates: “Children of Men”“Shoot ‘em Up” is a self-declared endorsement of gun control. But the kind that would have Charlton Heston creaming his pants. The secret to a fun anti-firearm film, it seems, is firearms. More specifically, firearms being fired. If only Michael Moore had hit on that for “Bowling for Columbine.”