there's been many a study on crowd psychology and the weird dynamics that go on within stressed crowds. None of them can excuse the the stampede crushes of frenzied crowds in this case. Except fear of death obv, a gunman or a fire or whatever.
in this particular case they trampled a worker to death, because they couldn't fucking queue in an orderly fashion and where determined to beat everyone else to the bargains. The desire to win and fuck everyone else as you are chasing to get one over is not an attractive one. I'm not buying _floats_ orderly queue's from shit poor times and places, this was a pure and simple trampling of a man buy a load of ham-footed twats.