why was bruce wayne as the batman in The dark knight returns by frank miller seen as a terrorist or violent vigilant

In "The Dark Knight Returns" by Frank Miller, Bruce Wayne's portrayal as Batman is seen as a terrorist or violent vigilante due to his extreme methods and disregard for the law. Unlike traditional comic book superheroes who work within the constraints of the legal system, Batman in this story is shown breaking the law, using excessive force, and causing destruction in his mission to fight crime.

The government and public view Batman's actions as dangerous and unlawful, leading to his branding as a vigilante. The character of Batman in "The Dark Knight Returns" represents a darker and more morally ambiguous version of the character, which challenges traditional notions of heroism and justice.