A dystopian society is characterized by oppressive societal control, often depicted in literature.
In Chapter 10 of "The Hunger Games" by Suzanne Collins, evidence of Panem as a dystopia is seen when Katniss realizes the Capitol's manipulation of the Games for political control. She notes, "The real sport of the Hunger Games is watching the tributes kill one another."
So, This revelation exposes the Capitol's cruelty and control over its citizens. This knowledge intensifies Katniss's resistance against the Capitol, setting the stage for her defiance and challenging the dystopian order.