I completely agree with you, especially that all testimony has to be examined closely. The knife case the guy was literally standing in the middle of the intersection (that was wear the blood stain was left) So about as 'out there' as you could get.

If I thought it was a simple problem I'd have a simple answer (that would be wrong [1]) I'm more interested in fixing the process, understanding what in the officer's training lead him to shoot at that moment in time, what other options were considered, and what changes should we put in place to avoid unnecessary bloodshed.

[1] "For every complex problem there is an answer that is clear, simple, and wrong." -- H.L. Mencken