Any time I see something like this, I immediately think about what would have happened if my parents had been in the situation. It would have been a tragedy. These poor people, blindly trusting something you just expect to work properly. Like it did the other 1456 times you got on it. Then, in the blink of an eye...SNAP! Think fast!
Apparently a chain and an emegencey brake both snap sending the escalator full of people backwards and boy does it go fast.The escalator had passed it's inspection last week. This happened at Langham Place Mall in Hong Kong.
I bet you'll hold on a little tighter next time you ride one! I will.