This document discusses crowd management and crowd dynamics. It explains that crowds can form for various reasons such as economic hardship or political grievances. Crowds are usually categorized as casual crowds, sighting crowds, agitated crowds, or mob-like crowds. Mob-like crowds are the most volatile and potentially violent type of crowd. The document also describes how crowd dynamics work and the psychological factors that influence individual behavior within crowds. People in crowds may feel anonymous and look to others for cues on how to act. Understanding crowd behavior and dynamics is important for crowd control.