With respect, I must disagree.
Since 9/11/01, I haven't met a single Muslim who denounced the 9/11 attacks, or terrorism in the name of Islam.
Now, perhaps there is fear among some Muslims to not "rock the boat," as it were, and thereby make themselves pariahs within the Muslim communities in the USA... I honestly don't know.
But, given the lack of condemnation of those attacks by Muslims, as well as the attempted justification for them... (somehow America "deserved" it)...?
It seems that as long as Muslims remain quiet on terrorism, that they give tacit approval of such attacks...