Is there a list of generic literature/historical/other examples you can adapt for a variety of prompts?
MLK - courage, sacrifice
Ghandi - courage, sacrifice, standing up, etc
Catcher in the Rye - Frustration, change, immaturity
Stem cell research - two sides to an issue, practicality vs. morality
Hitler - Power, corruption, propaganda
Julius Caesar (play) - Pride, downfall