The kid was pointing a gun at the police. The police did nothing wrong.
Here is an extremely bias news article for those who are interested.
http://occupyamerica.crooksandliars....was-shot-three
Edit: I fixed my post because people weren't getting the joke that the news article(and many others about this incident) was basically leaving the most important detail for the last sentence to make the police look like murderers who shoot random innocent children in the back.