Peter Bergen : Violence against U.S. over film is part of a pattern of incidents . A May 2005 Newsweek article claiming that American soldiers at Guantanamo had flushed a copy of the Quran down the toilet went unnoticed for nearly a week before Pakistani politician Imran Khan pointed the article out in a news conference . He says Christian and Muslim extremists have provoked deadly attacks for years . Bergen : In several cases , the words of political leaders have helped spark violence .
Peter Bergen : Violence against U.S. over film is part of a pattern of incidents . He says Christian and Muslim extremists have provoked deadly attacks for years . Bergen : In several cases , the words of political leaders have helped spark violence .