ABCNEWS : More Americans Doubt Islam's Tenets

Last January 22 percent said Islam doesn't teach respect for other beliefs; today it's 35 percent. And the view that Islam encourages violence is up by nine points, to 23 percent. Many more — 53 percent — reject this suggestion, but a substantial number, 25 percent, are unsure.

Similarly, while 42 percent of Americans express an overall favorable opinion of Islam, this is unchanged in the last 10 months, while unfavorable views are up by nine points, to 33 percent. (Still it was higher, 39 percent unfavorable, shortly after the Sept. 11 attacks.)

Conservative attacks on Islam have an effect.