A new Rasmussen Reports national telephone survey finds that 27% do not think American Muslims have that responsibility. Twenty-six percent (26%) of adults are not sure.

Fifty percent (50%) of men and 55% or more of those ages 40 and older say American Muslims should speak out against domestic terrorist attacks. Fifty-seven percent (57%) of Republicans agree, compared to 39% of Democrats and 49% of those not affiliated with either party.

Just 15% of all adults say American Muslims already are speaking out enough against potential terrorist attacks on the United States.