Fiona Brookman, who wrote a recent Home Office study, believes that the killer or the victim (or both) are drunk in about half of all male-on-male murders.
Mr Gibson had been shot, fighting back, in the office of Representative Tom DeLay, where the killer ran after shooting Mr Chestnut at the building's entrance.
So consider: Last week the top box-office draw in the country was "Max Payne" with Mark Wahlberg as an obsessed cop tracking down the killer who murdered his wife and child.