There's a book called The Cultural Cold War: The CIA and the World of Arts and Letters by Frances Stonor Saunders. Part of it deals with the CIA's efforts to destroy social realism, to make acceptable only art devoid of political or emotional content. I thought they had just succeeded in keeping it out of corporate media, out of the museums, but that they couldn't change how people reacted to it. But it may be that they won and that most of us can't react to such art anymore.
These pictures, to me, represent where art should have gone after the impressionists and the post-impressionists, that they are the heirs to Gauguin and Cezanne and of Van Gogh's "Potato Eaters", to Goya's "The Third of May, 1808, or The Executions on Principe Pio Hill." Instead, what do we have today? Sometimes art is pretty. Sometimes it is clever, but it is usually without any deeper significance, without any emotional or political content.