Crazed man killed by officers +++Conspiracy?

Crazed man killed by NYC officers - I like how they are saying he was lunging at them when the video clearly shows a gang of officers charging after him while sharpshooting his ass. Also, he had a large knife, they shot him like 10 plus bullets. Was that really necessary? Was it because he's black? I call for a retraining their lazy officers and an investigation because this is bullshit! What if he was a white man? You know they would have just tazed the man from a far. Fuck the justice system! Fuck the police!