Answer:
1. Macbeth: Shakespeare's play portrays Macbeth's ambition leading to his downfall.
2. Adolf Hitler: Hitler's quest for power and domination in World War II demonstrates the consequences of unchecked pride.
3. Richard Nixon: The Watergate scandal shows Nixon's abuse of power and the consequences.
4. Harvey Weinstein: Weinstein's abuse of power in the entertainment industry serves as a contemporary example.
Step-by-step explanation: