Macbeth feels guilty about having Banquo killed, as shown by the vision of Banquo's ghost.
Macbeth's vision of Banquo's ghost shows that he feels guilty about having Banquo killed. This haunting manifestation reflects Macbeth's inner turmoil and the weight of his actions. The ghost symbolizes Macbeth's conscience plaguing him for his treacherous deed, revealing his psychological distress.
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