Two in critical condition as grocery chain’s door policy banning couple from store sparks shoot-out

TWO men, including a security guard, have been left in critical condition following a sudden shoot-out at a supermarket.

An unidentified male, 20, opened fire on the security guard at around 8pm on Friday at the Great Wall Supermarket in Houston, Texas.

The incident occurred after a security guard stopped the man and his girlfriend while entering the store, in Chinatown…