I agree, just as we would if the roles were reversed. But the Muslims did not start this. If one wanted to place blame somewhere, I suppose he could go back to Justinian. But to what purpose other than to justify what we've done in what whozis likes to call "the current period"?
What I find interesting is that American victims are only a minor part of the drama. The ME extremists are going after just about everybody, including of all things the Japanese. If nothing else, this suggests that none of this has anything to do with religion.
The Muslim terrorists claim they will kill all non-Muslims. The Japanese are not Muslim. It is very much about Islamic religious extremism.