LONDON (Reuters) - British public broadcaster Channel 4 is courting controversy with what it calls a "shockingly real" drama about the fictional assassination of President George W. Bush. "Death of a President," shot in the form of a documentary examining the assassination, will use a blend of archival footage and computer-generated special effects to portray Bush in October 2007 arriving in Chicago during an anti-war rally. In the film, Bush is killed by a sniper, and the investigation quickly focuses on a Syrian-born man. It will air in October on Channel 4's More4 digital channel, as well as at the...