Protests and debates have erupted across the nation this week in the wake of a grand jury's decision not to indict the Cleveland police officers who fatally shot 12-year-old Tamir Rice. Most of that debate has centered on whether police had real reason to fear for their lives, as the grand jury believed. Few have suggested that Rice -- a preteen playing with a toy gun in a park -- deserved to be killed. But that's exactly what Lt. Javier Ortiz, president of Miami's police union, argues on Twitter during a debate with Billy Corben over the case. Ortiz writes...