LET'S BEGIN WITH THE BIG REVEALS: Half of all Americans are angrier today than they were a year ago. White Americans are the angriest of all. And black Americans are more optimistic about the future of the country and the existence of the American dream. There are depths and dimensions, dark corners and subtle contours to our national mood, and setting aside the issue of who actually has a right to be angry and about what - these pages are neutral territory; everyone is allowed their beef - we found three main factors shaping American rage: