You happen to have the wrong target ~ it’s the Congressional Black Caucus that’s against laying off all those people. USPS is roughly 40% black ~ and at the moment that makes black USPS employees a VERY LARGE percentage of the employed black people in America.
I’m going to bite my tongue here. I will, however, say that the racial composition of the workforce of any firm should not be the determinant in the decision to effect a RIF.