If seeing Arab, Pakistani, or other “ethnic” Muslims menacingly wave their hands while lambasting the West is nothing strange, seeing homegrown, non-accented Western converts doing the same thing is. Along with John Walker Lindh, Richard Reid, Jose Padilla, and Germaine Lindsay — all Western converts to Islam and all terrorists — in the spotlight today are Abu Abdullah, the native Briton turned Muslim cleric, who makes no secret of his vitriolic hatred of the West and who was just arrested for terrorist-related charges, and Azzam “the American” (formerly Adam Gadahn), who after receiving a gracious introduction by Dr. Aymin Zawahri...