This article examines the experiences of Spanish workers during the construction of the Panama Canal by the United States from 1904 to 1914. Spaniards engaged in a wide range of protest actions during the construction years, from strikes to food riots to anarchist politics. Employing Victor Turner's concept of liminality, the article highlights the mutability of the Spaniards' position and identity and examines several factors that shaped their experiences: the US government's policies of racial segregation and the injustices Spaniards experienced; the political and racial identities they brought with them from Spain; and their complex racial and imperial status in the Canal Zone. Spaniards possessed a remarkably fluid racial identity, considered white or nonwhite depending on circumstances, and that shifting status fueled their racial animosities as well as their protests.