That video is appalling. Thankfully they caught the guy.
It's such a shame that this could only ever happen in New York City. I imagine if you were to type, say, "stabbed to death" and a state, e.g. Florida, Texas, Wyoming, etc., and filtering for recent incidents, you'd get zero hits. It's exclusively a problem in "Democrat run cities", you see.
Don't be a wiseguy. Atleast in the middle parts of America, people are armed to the teeth. Cities like New York do everything they can to tie the hands of law abiding citizens and police.