Why are confederate flags so controversial?

Confederate flags are controversial because they symbolize a legacy of racism, slavery, and white supremacy in the United States. For many, the flag represents the Confederacy's fight to preserve slavery during the Civil War, leading to deep-seated pain and division. While some individuals claim it as a symbol of Southern heritage, the flag is often associated with hate groups and has been used in protests against civil rights. This duality makes it a contentious symbol in discussions about race, history, and identity.