May Day: A Graphic History of Protest traces the development of International Workers' Day, May 1st, against the ever-changing economic and political backdrop in Canada. Recognizing the importance of work and the historical struggles of workers to improve their lives, with a particular focus on the struggles of May 1st, the comic includes the reader as part of this history, and the story concludes that "We are all part of this historical struggle; it's our history and our future."