Shortly after the shooting death of Jordan Manners, the 15-year-old Toronto student, eighth-grade students at nearby Oakdale Park Middle School were called to an assembly. The subject: relations with the police. It's a hot issue in that part of town. The community is in an uproar over the shooting and allegations are flying that police have been heavy-handed in their hunt for Jordan's killer. But the group invited by the school to address the students weren't interested in improving relations with the police. They were there to fan the flames. Their message to the 12- and 13-year-olds was simple: Don't...