The Situationist International (SI), a political/artistic movement organized by Debord and his colleagues and represented by a journal of the same name, attempted to create a series of strategies for engaging in class struggle by reclaiming individual autonomy from the spectacle. These strategies, including "dérive" and "détournement," drew on the traditions of Lettrism. As founder of the SI, it has been suggested that Debord felt driven to generalize and define the values, ideas, and characteristics of the entire group, which may have contributed to his hand-picking and expulsion of members. The hierarchical and dictatorial nature of the SI existed, however, in the groups that birthed it, including the Letterists and the Surrealists.