According to FUNKTIONARY:

Which-Nigger – any native Black American who is routinely racially and spatially profiled for arrest as a likely target-suspect. A “Which Nigger” is never guilty by association—but guilty by simply being—a Black man in the wrong place at the wrong time near any alleged or actual crime, waiting for the “justice” railroad (oncoming train) and unaffordable legal representation thereby leaving him with a public defender that will ensure he will be afforded some extra time in prison.