What bill will have to be paid one of these days to kill a mockingbird?

Racial Prejudice against African American is the bill that the Americans have to pay one of these days. From the book "To kill a Mocking Bird" Atticus' prediction in 1930 turns out to be true. During the civil rights movement, white society underwent a large upheaval as African Americans fought for their rights that had previously been denied under centuries of systemic racial oppression.