Batman is a vigilante, which is not quite the same as a
terrorist. In any case, the movie Batman Begins draws much
inspiration from the graphic novel Batman: Year One, by Frank
Miller, who also wrote Batman: the Dark Knight Returns, in which
the idea of Batman as a terrorist is raised.
Also, in Alan Moore's Watchmen, the role of superheroes in a
crime-ridden society is put under the microscope. You might want to
read these comics to find out more and think for yourself.
