The writer will have to address any misconceptions parents have about the effects of children playing violent video games as well as any research that show negative effects of children playing violent video games. The writer will also need to acknowledge any valid concerns so as to create ethos so that the audience pays attention to what the writer has to say. The writer can then make an argument about the right of salesman (software companies in this case) to sell whatever product they want as they are not forcing kids (or anyone else) to purchase or use their product.