Critics are raining down hard on Spike Lee's first war epic. And it's not like I don't have objections. Miracle at St. Anna is too long, lazily constructed, and crammed with too many characters and subplots for any director to develop fully outside of an HBO miniseries. But Lee isn't any director. He's an African-American maverick with a legit gripe against the white face that Hollywood puts on war. The first scene in Miracle shows us a black World War II veteran watching John Wayne on TV…