The final dialogue between George and Hazel in "Harrison Bergeron" reveals the following reason:
C. The ending shows how this society has stripped its citizens of their humanity. They completely forget what happened and go about their lives.
While George was in the kitchen, his wife Hazel watched as their son, Harrison, was killed in live TV. However, she quickly forgets what she has seen, although she knows it was something sad.
The society in which they live has stripped them from their humanity. People are forced to wear handicaps in order to be average. And those, like Hazel, who are truly average, cannot understand a thing.
This is how the government controls people. Violence is not necessarily effective. So much so that Harrison still chose to defy the government, even though he knew they could kill him.
Control is more effective when people forget who they are, forget they are human. It is easier to control those who do not understand or remember a thing.
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