There are plenty of critics of military spending on both the left and right in the U.S. and it isn't a career ender for a normal human to advocate it. Nor is it a career ender to say you are a marxist or to criticize America. If you talk about The Bell Curve, however...

Islamists being willing to kill for their religion is its own thing, and doesn't (or, at least, didn't) have much to do with the western intellectual environment.