Many police and highway patrol cars are equipped with cameras. But with the shooting of Michael Brown by a Ferguson, Missouri, police officer some are raising the question-should cops just go all-out and don wearable cameras? Such cameras could potentially protect both the public and the police. Columnist Reihan Salam makes his case for why cameras on cops and teachers makes sense. And, Evanston police Commander Jay Parrott explains why the department now uses cameras on officers’ tasers.