Of course it was justified and legal.  Did anybody think for a nanosecond that it was not?  The cops did what they are trained to do, i.e. shoot first and ask questions later.  They did exactly what they were trained to do, i.e. kill.

It is not the cops at fault, it is us because we approve of the training and the tactics.  We truly don't care who they kill.  We are the problem, not the cops.  They just do what we tell them.