Toronto Police Const. James Forcillo, the cop who allegedly shot 18-year-old Sammy Yatim nine times, was charged Monday with second-degree murder in Yatim's death. Since the Special Investigations Unit's inception in 1990, Forcillo is the 11th officer in Ontario to be charged with second-degree murder or manslaughter. The unique case is prompting a lot of questions. For example, "It is rare that a police officer in the course of his duties is charged with second-degree murder. Is this a case of overcharging by the SIU to appease public opinion?" Here are answers to that and other questions.