On January 8th, 2010, Muslims and their non-Muslim friends gathered in Detroit, Michigan, to protest terrorism in the name of Islam. Majed Moughni, the event's organizer, predicted that thousands of Muslims would join together and condemn violence committed by Muslim terrorists. Unfortunately, Muslims aren't quite that disturbed by terrorism.
Perhaps the Muslims who refused to condemn terrorism had some of the following Islamic passages in mind:
Qur’an 9:29—Fight those who believe not in Allah nor the Last Day, nor hold that forbidden which hath been forbidden by Allah and His Messenger, nor acknowledge the Religion of Truth, from among the People of the Book, until they pay the Jizyah with willing submission, and feel themselves subdued.
Qur’an 9:73—O Prophet! strive hard against the unbelievers and the hypocrites and be unyielding to them; and their abode is hell, and evil is the destination.
Qur’an 9:111—Surely Allah has bought of the believers their persons and their property for this, that they shall have the garden; they fight in Allah's way, so they slay and are slain; a promise which is binding on Him in the Taurat and the Injeel and the Quran; and who is more faithful to his covenant than Allah? Rejoice therefore in the pledge which you have made; and that is the mighty achievement.
Qur’an 9:123—O you who believe! fight those of the unbelievers who are near to you and let them find in you hardness; and know that Allah is with those who guard (against evil).
Qur’an 47:35—Be not weary and fainthearted, crying for peace, when ye should be uppermost: for Allah is with you, and will never put you in loss for your (good) deeds.
Sahih al-Bukhari 6924—Allah’s Messenger said, “I have been ordered to fight the people till they say: La ilaha illallah (none has the right to be worshipped but Allah), and whoever said La ilaha illahllah, Allah will save his property and his life from me.”
Sahih Muslim 30—It is reported on the authority of Abu Huraira that the Messenger of Allah said: I have been commanded to fight against people so long as they do not declare that there is no god but Allah, and he who professed it was guaranteed the protection of his property and life on my behalf except for the right, and his affairs rest with Allah.
Sahih al-Bukhari 2785—Narrated Abu Hurairah: A man came to Allah’s Messenger and said, “Guide me to such a deed as equals Jihad (in reward).” He replied, “I do not find such a deed.”
Sahih al-Bukhari 2787—Allah guarantees that He will admit the Mujahid in His Case into Paradise if he is killed, otherwise He will return him to his home safely with rewards and war booty.”
Sahih al-Bukhari 2796—Narrated Anas: The Prophet said, “A single endeavor (of fighting) in Allah’s cause in the afternoon or in the forenoon is better than all the world and whatever is in it.”
Sahih al-Bukhari 2797—Narrated Abu Hurairah: The Prophet said, . . . “By Him in Whose Hands my soul is! I would love to be martyred in Allah’s Cause and then come back to life and then get martyred, and then come back to life again and then get martyred and then come back to life again and then get martyred.”
Sahih al-Bukhari 2810—Narrated Abu Musa: A man came to the Prophet and asked, “A man fights for war booty; another fights for fame and a third fights for showing off; which of them is in Allah’s Cause?” The Prophet said, “He who fights that Allah’s Word (i.e., Allah’s religion of Islamic Monotheism) be superior, is in Allah’s Cause.”
Sunan An-Nasa’i 3099—It was narrated from Abu Hurairah that the Prophet said: “Whoever dies without having fought or having thought of fighting, he dies on one of the branches of hypocrisy.”
Sunan Ibn Majah 2763—It was narrated from Abu Hurairah that the Messenger of Allah said: “Whoever meets Allah with no mark on him (as a result of fighting) in His cause, he will meet Him with a deficiency.”
Sunan Ibn Majah 2794—It was narrated that Amr bin Abasah said: “I came to the Prophet and said: ‘O Messenger of Allah, which Jihad is best?’ He said: ‘(That of a man) whose blood is shed and his horse is wounded.’”