Since this question has been posted in literature, I assume that the inquiry is meant to focus upon literature which depicts this idea.
Social order refers to social customs, practices, and institutions which come together to insure expected behaviors from the community at large.
The ease at which this order can be shattered is astounding. It has been proven that mob mentality (influence of peers to adopt certain behaviors) can force social order to deteriorate.
This is seen in Arthur Miller's The Crucible, George Orwell's Animal Farm, and William Shakespeare's Julius Caesar. In all three texts, small groups break out against the greater group. In doing so, all three small groups utterly destroy the social order. Abigail Williams (The Crucible) leads a group of young girls against the town of Salem. By the end of the play, many people have been wrongly accused of witchcraft. In Animal Farm, Major, Snowball, and Napoleon convince the other animals to turn against Mr. Jones. The animals revolt and, by the end, many look no different then the humans they revolted against in the first place. In Julius Caesar, Brutus and Cassius revolt against Julius Caesar and murder him. Their conflict with Caesar forces a new conflict with Antony. The Romans, first celebrating Julius Caesar, begin to celebrate Brutus. The social order has been turned on its head.