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  A. CROWD   Definition   The  crowd  is defined as a relatively large number of people in close proximity to each other (this is sometimes referred to as  localized collectivities ). The crowd reacts at once to a common focus or concern.   This is different than the  mass , which refers to people who are concerned about a common concern and influence each other's thinking but are not within close proximity of one another (often referred to as  dispersed collectivities ).   Crowds share characteristics:   They do not define how to behave or share clear expectations on what will happen.  They often feel something must be done right away to address their common concern.  Attitudes and ideas about the common concern spread very quickly among crowd members.  They often do and say things that they would normally not do, and they go along with the actions of others in the crowd.     Crowd Types   There are four different types of crowds.   1. Casual Crowd   This crowd...