The vicious murder and beheading of British Army drummer Lee Rigby by British Muslims Michael Adebowale and Michael Adebolajo has once again brought the specter of violent homegrown jihad into full view. Unlike the case of the Boston Marathon bombing, where the Tsarnaev brothers remained unidentified long enough to allow for rampant media speculation as to whether the attack was carried out by right-wing extremists or tax protestors, the two butchers held court in a Woolwich street on video, so they could not be misunderstood. In the video, they declaimed their grievances, including referring specifically to Sura 9 of the Koran (Al-Tawbah). That Sura includes two infamous verses, the "Verse of the Sword" (9:5), and Sura 9:29.
Sura 9:5 reads:
Then when the Sacred Months (the Ist, 7th, 11th, and 12th months of the Islamic calendar) have passed, then kill the Mushrikun (see V.2:105) wherever you find them, and capture them and besiege them, and prepare for them each and every ambush. But if they repent and perform As-Salat (Iqamat-as-Salat), and give Zakat, then leave their way free. Verily, Allah is Oft-Forgiving, Most Merciful.