An interesting exercise would be to assign the class to write duplicitous propaganda essays of some sort ... then redistribute the essays anonymously at random and assign the class to write essays refuting the propaganda.
I had a professor who taught a class on varieties of fascism. He had half of the students produce newsletters from fascist groups—Italy’s National Fascist Party, Germany’s Nazi Party, etc.—while the other half published anti-fascist newsletters. In the middle of the quarter, he switched them around, so the fascists were now anti-fascists, and vice versa.