An easy way to end discussions of reparations to anyone is to condition them upon a public pledge to forever forego bitching or complaining about past treatment again, if they do they can be summarily mocked and disregarded; the debt of the past is paid in full, official US history as taught in public schools will be made to reflect this, and white people are under no obligation to feel guilt of ANY KIND, for ever and ever, amen.
They will never make such a pledge.