Dystopian and speculative fiction imagines dark futures or alternate realities to critique society. These genres explore oppressive governments, environmental destruction, and loss of individuality, warning readers about unchecked power and technology. Key elements include totalitarian control, strict social hierarchies, and protagonists who rebel. Authors like Orwell, Atwood, and Bradbury use world-building, symbolism, and unreliable narrators to create immersive dystopian worlds that challenge readers to question the status quo.