...caused violence? It is for my composition class. I am writing a 10 page example essay; the prompt is to write an example essay that has a concrete and an abstract idea that relate to each other. My concrete idea was professional sports and my abstract idea was violence. Here's my generalization: Professional sports, either directly or indirectly may cause violence. A good example of an example essay would be Black Men and Public SPace by Brent Staples.