cruel and oppressive treatment by a leader
Macbeth becomes a tyrannical leader. He becomes barbaric and ruthless shown by his continual onslaught of lives in exchange for power
Lady Macbeth is the tyrannical force behind Macbeth. Her manipulation catalyses his tyranny
Macduff's extermination of tyranny - Macduff tries to restore order by killing Macbeth as he is aware that once the tyrannical force of Macbeth is diminished/extinguished, Scotland can be at peace again