One year ago: Michael Brown Jr., an unarmed 18-year-old black man, was shot to death by a police officer following an altercation in Ferguson, Missouri; Brown's death led to sometimes-violent protests in Ferguson and other U.S. cities, spawning a national "Black Lives Matter" movement. President Barack Obama justified the U.S. military's return to fighting in Iraq by saying Americans had to act now to prevent genocide, protect its diplomats and provide humanitarian aid to refugees trapped by Islamic militants. Actor Ed Nelson, 85, died in Greensboro, North Carolina.