If I recall correctly, the terrorists attacked the US because they "don't like freedom". That was the narrative on TV nonstop and any wavering from full support of the wars or "supporting the troops" was tantamount to supporting terrorists.
The irony being "terrorists" are just viewed as "martyrs" and "freedom fighters" on the other side of the coin, and every bomb dropped fighting them resulting in civilian deaths creates new terrorists/freedom fighters, who then go on to attack again killing more civilians, creating more radicals on the other side, who then bomb killing even more civilians. It's a cycle that never ends.