It's foundational by the loud silence. Occasionally you get a figure that makes a career of talking about it. Some, like Hedges, Moore, Sacco, Taibbi have been reporting on this issue for the last few decades. Most have been controversial like Sinclair Lewis, Dickens, Jack London, Daumier, Kley
Found this conversation between Hedges and LeDuff. Fascinating listening to these two old Times Reporters.