This has nothing to do with black and white. This has to do with circumstances. The incidents in Wilmington involved criminals who were refusing to respond to officer's commands to stand down. Those officers had cause to believe that their lives could be in danger. In this case, the situation was under control, according to the reports the first two officers sent to dispatch. In this case, the dead kid was being held down by two other officers when the third one shot him. The circumstances are completely different.
More information about formatting options