What is the main theme of to kill a mockingbird?

The main theme of "To Kill a Mockingbird" by Harper Lee is the exploration of the complexities of morality and justice in a racially divided society. Through the perspective of a young girl, Scout Finch, the novel examines issues of racism, discrimination, and prejudice in the Deep South of the 1930s. The central plot revolves around the trial of a black man, Tom Robinson, who is falsely accused of raping a white woman. The novel also delves into the themes of empathy, compassion, and understanding as seen through the eyes of Scout's father, Atticus Finch, a morally upright lawyer who defends Tom Robinson despite facing backlash from the community. Ultimately, "To Kill a Mockingbird" highlights the importance of empathy and standing up for what is right, even in the face of adversity.