Was the victim confronted with deadly force? Yes, the perpetrator was accompanied by a woman who brandished knife.
Was the victim able to retreat or was he cornered by a confronting perpetrator? That is for the jury to decide. The video is there. Let's just say you would not want to be prosecuting that case. And that is without even getting to the probability of jury nullification regardless of the facts.
If he had been armed with a firearm. He had every right to kill both of them. Not in the beginning when the woman was retreating and when the man was just verbally threatening him. But when she reappeared with a knife and he had cornered him and was manhandling him he had every reason to fear for his life and his life was in danger by anyone's standards unless they are a loon working some political agenda.
No one here is saying he is going to be convicted. I even said it is very unlikely a DA takes this case to a grand jury or a trial with the video evidence we all have seen. Now I see it was a box cutter not a kitchen knife. Just goes to show you how fucktarded the press is when making initial reports.
he would not have a right to shoot/stab her though if she was still behind the glass and not next to him or entering his space. Initally defending himself against the guy attacking him is what he most likely has a right to do under the law.