As investigators review video footage they hope will reveal why a Denville police officer shot a 21-year-old motorist five times, the dead man's mother called the officer a murderer and said she has hired an attorney. Miles holds a photo of her son Ruben Martinez when he was a junior at Morris Knolls High School. Martinez now 21 and living in Texas, was shot and killed early Thusrdsay morning by a Denville police officer. "Last night, I kept visualizing five gunshots pounding into a young man, 140 pounds," Maureen Miles, the mother of Ruben W. Martinez, said Friday. She...