Editing Collective behavior (section)

====The public====
Boom distinguishes the '''crowd''', which expresses a ''common emotion'', from a '''public''', which  discusses a ''single issue''.  Thus, a public is not equivalent to all of the members of a society.  Obviously, this is not the usual use of the word, "public."  To Park and Blumer, there are as many publics as there are issues.  A public comes into being when discussion of an issue begins, and ceases to be when it reaches a decision on it.