Everyone was a monster in a way and all of them blamed each other in a way which made their civilization fall apart slowly. Like when Charlie points out things that Les Goodman does just to find a scapegoat and cause a riot around Goodman's house . And people point our others idiosyncrasies because they are just accusing people for being monsters. Charlie even goes as far to blame a child for the weird events happening on Maple Street. So all in all. everyone was a monster in a way.