I've never been to Alabama, but as I understand it the cultural climate in Alabama shares certain key characteristics with that in rural Massachusetts.

Were I, in a rural Massachusetts bar, to make any public statement to the effect that the individuals who flew planes into the WTC could plausibly be seen as heroes, or that they were comparable in any way to American soldiers fighting and dying for American interests (1), I would expect the locals to view this as a challenge to sacred virtues and to react accordingly.

I would not expect this to necessarily cause a fight (though it depends on how I went about it, and whether and how I backed down when those virtues were upheld by those around me); it wouldn't even necessarily get me asked to leave (though that's more likely, especially if I continued to defend that position).

(1) Edit: on further thought, I suspect that just talking about U.S. soldiers fighting for "American interests" (as opposed to "American values" or "America" or some such thing) would raise a suspicious eyebrow or two, as it superficially pattern-matches to a particular mid-1900s stereotypical formulation of Communist propaganda.