The consequence of excess and crowds can produce breaches of social norms of behaviour, sometimes causing injury or even death, such as for example, at the Altamont Free Concert, an outdoor rock festival.
过度和人潮的后果可能会导致违反社会行为规范，有时甚至会造成伤害甚至死亡，例如在阿爾塔蒙特自由音樂會，一场室外摇滚音乐节发生的意外。