The cops placed themselves in a poor tactical position and made a poor tactical decision. Innocent kid dead, internet juries all agog, two idiot trigger pullers (based on their previous transgressions) back on the street. Another victim in a stupid battle.
Nope, Tamir Rice didn't do anything wrong at all. Didn't commit any crimes at all. Didn't cause a police response by his own actions. Nope, not at all.