The Islamic State has repeatedly called upon Muslims in the U.S. to murder American civilians. In September 2014, Islamic State spokesman Abu Mohammed al-Adnani published a lengthy piece entitled “Indeed Your Lord Is Ever Watchful,” consisting largely of a call for Muslims to mount jihad attacks in Western countries. Al-Adnani declared:
Kill the disbeliever whether he is civilian or military, for they have the same ruling. Both of them are disbelievers. Both of them are considered to be waging war [the civilian by belonging to a state waging war against the Muslims]. Both of their blood and wealth is legal for you to destroy, for blood does not become illegal or legal to spill by the clothes being worn. The civilian outfit does not make blood illegal to spill, and the military uniform does not make blood legal to spill.
“Both San Bernardino attackers pledged allegiance to the Islamic State, officials say,” by Missy Ryan, Adam Goldman, Abby Phillip and Julie Tate, Washington Post, December 8, 2015 (thanks to Pamela Geller):
SAN BERNARDINO, Calif. — Federal authorities believe the Facebook posting from one of the attackers who killed 14 people here last week was made on behalf of both shooters, according to several senior U.S. law enforcement officials.
The Facebook posting said, “We pledge allegiance” to the leader of the Islamic State, using the name Khalifah Abu Bakr al-Baghdadi Al Qurashi, the emir of the self-proclaimed Islamic State. Some of the text in the posting appeared to be garbled, one official said.
This new detail illustrates what federal officials described Monday as the radicalization of both attackers. The FBI investigation continues to explore when the two attackers became adherents to a radical strain of Islam and who may have influenced whom, another law enforcement official said Tuesday.
“It’s looking like they were on the same path at the same time,” that official said….