When Mitchell Crooks checked out of the county jail last month and checked into a Las Vegas hospital, the 36-year-old videographer knew he had a fight on his hands. His face was bloodied and bruised. His $3,500 camera had been impounded by police, and he faced criminal charges for battery on a police officer. One month later, things have changed for Crooks. The Clark County district attorney's More..office has dropped all charges, and Crooks has retained an attorney of his own. The Metropolitan Police Department has opened an internal investigation into the Las Vegas police officer, Derek Colling, who Crooks...