Armed security guard runs away after mistaking a man for a robber

A large group of people are packed inside an unidentified store going on about their business while a security guard with an AK-47 rifle is standing next to what looks like an ATM.
A random man emerges out of the group, pushing through to the front of the line. He was wearing a hat, ripped black jeans and a red sweater.
As soon as the security guard notices the man, he takes off running, followed by customers - leaving the suspicious man alone at the centre.