In the book the chocolate war what is a symbol in chapter 30?

Brother Leon insists on conducting the chocolate roll call, even though most people bring their money and report directly to Brian. Leon congratulates boys for selling their chocolates even though everyone knows they were not responsible for the sales at all. Leon calls on Jerry, and as always, Jerry says no. Then, a student named Harold Darcy raises his hand and asks Brother Leon why it is that Jerry is not selling the chocolates. Harold says that he and everyone else have the right to know, since they have all been selling chocolates since day one. Brother Leon asks Jerry to answer the question. Jerry replies: "It's a free country," but Brother Leon says that answer is not good enough. Jerry then confirms that the sale is indeed voluntary, and that he does not have to sell the chocolates. Harold asks Jerry if he thinks he is better than everyone else, and Jerry says no, but that he still refuses to sell the chocolates. The tension in the room mounts and is finally broken by the bell. When The Goober goes into the assembly hall that afternoon, he is met with applause. Someone announces that he has sold his fifty boxes, and Goober is shocked since really he has sold only twenty-seven boxes. His feeling that something is rotten at the school is confirmed, and he tries not to think about what it means.

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