Another young, unarmed black man has been shot and killed by a police officer. Early New Year’s Day in Oakland, Oscar Grant, a 22 year old father, held his hands up and pleaded with the arresting officers not to hurt him because he had a daughter. But once he had been wrestled down to the ground, with one officer’s knee in Grant’s neck area, a second officer stepped back, took out his gun and shot Oscar Grant the back. And then Oscar Grant was handcuffed. And then Oscar …