A conversation with Daniëlle Slootjes (University of Amsterdam) on the behavior of crowds in late antique Rome and Constantinople, based on her chapter "Crowd Behavior in Late Antique Rome," in the edited volume Pagans and Christians in Late Antique Rome: Conflict, Competition, and Coexistence in the Fourth Century (Cambridge 2015) 178-194. As our own political world is increasingly revolving around mass protests, it is time to revisit what we know about the dynamics of crowds in imperial Roman cities, whether they acted for or against the regime of the day. Check out also the volume that Daniëlle co-edited with Erika Manders, Leadership, Ideology, and Crowds in the Roman Empire of the Fourth Century (Stuttgart 2019).