This article investigates the coinciding of the mass migration from Europe to the Americas and the emergence of mass culture, two developments that shaped everyday life, popular entertainment, and Jewish and non-Jewish relations at the turn of the twentieth century. Jewish actors and actresses were among the most prominent performers who staged in Orpheums, Varietés, and vaudevilles on both sides of the Atlantic. In their performances they drew on the notion of a new quality of mobility that society was experiencing, utilizing it to negotiate issues such as of the cultural construction of identities and Jewishness, or to critically reexamine antisemitic and nationalistic attitudes. On the one hand, mobility enabled negotiations of controversial issues. On the other hand, mobility led to accusations against popular entertainment, both legitimate and erroneous—for example, that vaudevilles functioned as covers for clandestine prostitution. Therefore, the article examines the question of how mobility influenced popular culture. What were the controversial issues that mobility raised, and what accusations did these evoke? In what ways did actors and actresses in popular culture address gender and Jewishness? To answer these questions, the article analyzes the spaces of popular entertainment in Budapest, Vienna, and New York through close examinations of newspapers, manuscripts, playbills, and records of censorship.