Of course people are disappointed when people get killed, initial assessments are wrong, or when good men have moral failures. You need a poll for that?
The fact is that hindsight is seldom 20/20 and no one knows what Benghazi would look like in the alternative. Would we have been more successful in Libya with a bigger military presence? Would any fewer Americans have died?
Would our assets in the Middle East be safer if the administration claimed that there was no relationship between Benghazi violence and the violence everywhere else (especially in Cairo) that was related to the video? Would Morsi and Kharzai have refused to condemn the violence in Benghazi if it had presented as Terrorism as opposed to a stupid YouTube video?