A man was stabbed to death after complaining to a fellow customer who failed to say 'thank you' when he held the door open for him.
The 37-year-old was stabbed outside a Brooklyn smoke shop as a violent crime wave continues to sweep New York City.
The stabbing occurred around 10.20pm on Tuesday after the victim, who has not been named, held the door open for a fellow customer walking into the 4th Ave Tobacco Road Corp in Gowanus.