Leftists have been yearning for an answer to Rush Limbaugh for some time, and they may have found him, not in radio, but in movies: the odious Michael Moore. Moore’s Fahrenheit 9/11 is smashing box-office records for a documentary film, outgrossing the competition in the first weekend of its release. The film has even become a news story. The Disney studios backed out of distributing it — too controversial — but it won the first prize at the prestigious Cannes Film Festival, where its anti-war, anti-Bush message got a warm welcome. Moore, capitalizing on the publicity, found another distributor. Moore...