There is no reliable way to distinguish a "moderate" from an "extremist," given the deep roots within Islamic texts and teachings of the jihad doctrine and Islamic supremacism, and given the fact that no Islamic sect or school of jurisprudence has declared Osama bin Laden's understanding of Islam to be un-Islamic. Here is more proof of the correctness of that observation.
Also, note that once again it was an Islamic cleric who committed violence against unbelievers, once again apparently missing the true, peaceful teachings of Islam that should have led him toward a more pacifistic, Gandhiesque line of resistance against those whom he regarded as occupiers of his homeland.
"Two American soldiers shot dead by uniformed Iraqi: US," from AFP, May 2 (thanks to Doc Washburn):
Two American soldiers were shot dead and three more were wounded on Saturday when an Iraqi wearing army uniform opened fire on them south of the northern town of Mosul, the US military said.
"According to initial reports, an individual dressed in an Iraqi army uniform fired on the Coalition forces and was killed in the incident" around 20 kilometres (12 miles) south of Mosul, the statement said.
It called the incident "a small arms fire attack at a combat outpost."
A Mosul police officer identified the assailant as Hassan al-Dulaimi, a soldier who also served as the imam of a mosque at an Iraqi army training centre south of the city, the capital of Nineveh province....