April 4, 2003, 7:15 a.m.Captain America, Traitor? The comic-book hero goes anti-American. By Michael Medved s if Defense Department officials didn’t face enough challenges in and around Iraq, they must now prepare for battle without a celebrated component of past victories. Captain America, the patriotic superhero whose comic-book exploits inspired the nation in World War II, now feels uncertain about the nation’s cause; in his latest adventures, The Sentinel of Liberty seems disillusioned, embittered, and surprisingly sympathetic to terrorists. This odd, unsettling direction for Marvel Comics comes at a time of maximum cultural influence. The company owns 4,700 characters, including...