Unless there's something I'm missing, it looks like that was completely justified. A big man litearally threatening to kill an old man in an argument, refusing to back off after repeated warnings, and then moving into his personal space. Yeah, he had it coming. Just because those two look ugly and there's a woman crying, doesn't mean they're in the wrong. Also, since other people seem to use this as an opportunity to spill their guts about politics: If those two voted for Trump, good on them. Don't let leftists take away your right to defend yourelf.