Mark Twain's writings, particularly "The Adventures of Huckleberry Finn," exposed social injustices in America through satire and sharp social critique. Twain addressed issues such as racism, slavery, and class disparities, using humor and the innocent perspective of his characters to highlight the moral failings of society. By portraying the struggles of his characters against the backdrop of deeply entrenched social norms, Twain encouraged readers to reflect on their own beliefs and biases. His candid exploration of these injustices paved the way for subsequent literature that challenged the status quo.