Boy Scouts of America and Cub Scout troops carry a large American flag during the LibertyFest Fourth of July parade in Edmond, Okla., on Monday, July 4, 2011.In this summer of our discontent, Americans arrive at the Fourth of July full of doubt and disappointment. The sickly economy is the main cause; if unemployment were 8 million (about 5.2 percent) instead of 14 million (9.1 percent), Americans would feel better. But we are also unhappy with our democracy—though hardly anyone says so—and ...