I tend to find lots of queue jumping in Singapore at the Gate's Security Check this being elderly Chinese travellers most likely not used to the idea of having to queue, they don't even have the decency to walk through the metal detector in a one by one basis. But getting back on track with this topic, There are people in any nationality that do not have the manners or know-how when it comes to queuing and whilst at times i can live with the fact that some people are rude at other times i don't hesitate to point their rudeness out.