Paul McCartney's instantly-notorious first public comment on John Lennon's murder in December 1980 - "it's a drag" - was at the time held up as an example of gross insensitivity by an estranged friend. In reality it was the understatement of devastation. There's a telling line in Sidney Lumet's 1983 film "Daniel" - a fictionalized account of the struggles of the two children of executed "spies" Julius and Ethel Rosenberg. "Why don't you console...