John Esposito, using poll data from Gallup, wrote that Muslims and Americans were equally likely to reject violence against civilians. He also found that those Muslims who support violence against civilians are no more religious than Muslims who do not.[18]

A Pew Research study from 2007 found that over 1 in 4 Muslim adults under the age of 30 in the United States, Great Britain, France, and Spain believe suicide bombing can be justified at least rarely.[19]

In another Pew Research study, from 2006, at least 1 in 4 respondents in the Muslim nations surveyed, except Turkey, had at least some confidence in Bin Laden. Confidence in Bin Laden was 16% or less among Muslims in the four European nations surveyed.[20]

A 2013 Pew Research Center poll asked Muslims around the world whether attacks on civilians were justified. Globally 72% of Muslims said violence against civilians is never justified, and in the US, 81% of Muslims opposed such violence. About 14% of Muslims in the nations surveyed (and 8% of Muslims in the US) said violence against civilians is "often" or "sometimes" justified. An average of 25% of Muslims among the 20 nations surveyed believe suicide bombing and other forms of violence against civilian targets is justified at least rarely.[21][22][23] The survey did not include some Muslim nations, such as Iran, Saudi Arabia, Algeria, Yemen, Syria, and Libya, but did include densely populated Muslim countries such as Pakistan, Turkey, Egypt, Nigeria and Indonesia.[24]

A Zogby poll reported that 69% of American Muslims supported stronger laws to fight terrorism