answer:We would need to know a lot more about the question and its framing, to be able to interpret the answers.For as far as I understand, this answer represents the middle of a scale in which “Ones” are respondents who said 9/11 was “totally unjustified” and “Fives” those who said the attacks were “completely justified. I don’t think that believing that the attacks were somewhat justified is such an extreme position, per se. One could think of the attacks as if they were somewhat justified while still thinking that they were overall appalling and reprehensible. One might, for instance understand the reasons behind the attack while still disagreeing with the fact that it was carried out. As such, I think this question was setup extremely poor; way too poor to base any conclusion on it, other than that those answering with a 5 are indeed likely holding extremist views. I find it hard to conclude the same, for those that answered 1 through 4, as well as any conclusion that they are not. A respondent may for instance see no justification at all in attacking the twin towers, while still believing that something like suicide bombs and martyrdom are perfectly OK in their local struggle.