CHICAGO (AP) — The white officer who shot a black Chicago teen 16 times has been charged with murder and jailed. The graphic video of the slaying has been made public. And in the hours after the footage was released, protesters seemed to honor pleas for restraint.The question now is whether those efforts will be enough to address the simmering resentment that authorities took more than a year to share the footage and charge the officer who emptied an entire magazine into the teen even after he had crumpled to the ground.City officials and community leaders had long braced for the release of the dash-cam video showing the death of 17-year-old Laquan McDonald.