"The whirlwinds of revolt will continue to shake the foundations of our nation until the bright day of justice emerges."
This metaphor compares the struggle for justice to a whirlwind, which emphasizes the intensity and turbulence of the fight for equal rights. It suggests that the suffering of Black people is not just a small problem, but a force that can shake the entire nation. This metaphor shows how deeply ingrained and widespread racial injustice was in America, and how the struggle for equality was a massive and ongoing effort.