Hmm. I watch NBC news every night at 6:30. Didn't notice it. Maybe because I'd seen the the video earlier in the afternoon on some other feed. I hadn't heard the 911 calls until today.
I feel sorry for the cop. What's he supposed to do? Get out of a car and immediately sees someone with a knife chasing someone and knocking them down, then go after another person with the knife while someone else is kicking the down person in the head. Total chaos and all he is probably thinking is that person is going to stab that other person. What's he supposed to do, let it happen? Heck, he doesn't even know who the original aggressor(s) was(were). All he sees is someone is going to get stabbed and he acts. No win situation for him.
I hope cooler heads will prevail once they see what happened. I'm glad they released the video and 911 calls so quickly. That always seems to be a point of contention in these situations. If the video isn't released ASAP, people think a conspiracy is forming.
However, sometimes even video won't convince people. I was on a jury for a stabbing and armed robbery. It took place directly in front of the doors to a 7/11 and was on video clear as can be. Purple 2-door Lincoln (very unique car) with white guy driver that had unique facial features (looked like a neanderthal with fetal alcohol syndrome), clear as day, stabs a guy in the face. The car belonged to the stabbers mom. Three people identified him. His own mom didn't show up for the defense. Yet 1 juror said she thought the police were lying. Took several hours to convince her, and I really don't think we did. She was just tired and wanted to go home. YIKES! But that's the kind of juror a defense attorney hopes for. Just 1.