Injustice
Narrate an experience of injustice, an instance when an individual (or a group of people, perhaps)was treated unfairly. Events of the past, such as the Ludlow Massacre, certainly qualify, as do events that have occurred or are presently happening in the present day--the Dakota Access Pipeline, for example. In your choice, it will likely help your analysis, of course, if the injustice was somehow preventable.