This essay analyzes the actual relationship between natural and manmade crises in longue-durée perspective and questions labels attached by master narrators. It challenges the standard view by differentiating sociologically between groups benefiting or suffering from migration. At the beginning, scales of spatial and temporal analysis are discussed as well as types of migration in relation to their potential impact. Next the elimination of mobility and crises in historiography and political theory regarding Greek and Roman societies are discussed. The following section approaches three distinct mass migrations in terms of push factors perceived, often justly so, as crises: the misnamed “peoples” migrations, migration after the “fall” of the Roman Empire, and settlement of the Yangtze Valley. Then forced labor mass migrations (slaveries) and the migrations in the Atlantic, Indian Ocean, and North China migration systems, self-decided under extreme economic and societal constraints, are analyzed. In conclusion present-day discourses are placed in context.