Since a white police officer, Darren Wilson fatally shot unarmed black teenager, Michael Brown, in a confrontation last August in Ferguson, Mo., there have been many other cases in which the police have shot and killed suspects, some of them unarmed. Mr. Brown's death set off protests throughout the country, pushing law enforcement into the spotlight and sparking a public debate on police tactics. Here is a selection of police shootings that have been reported by news organizations since Mr. Brown's death. In some cases, investigations are continuing.