The intensifying speed-up of contemporary economic, social and political life troubles democratic theorists because they assume that democracy depends on patience. This article turns to Martin Luther King, Jr. to challenge democratic theory’s temporal bias. I argue that King demonstrates that impatience, too, is a democratic virtue. Building on impatient knowledge, democratic impatience aides in overcoming undemocratic legacies, fosters democratic subjectivity and agency, ensures political accountability, and creates a more inclusive practice of democratic belonging. I furthermore show that King reveals (...) the temporal sophistication of democratic impatience, thereby contradicting the prevailing interpretation of self-defeating instantaneousness. In particular, democratic impatience’s temporal origins of centuries of injustice, human mortality, and the context of social acceleration provide a mature impetus for democratic action. Moreover, democratic impatience persists over time. On the one hand, it does so because injustice persists. On the other hand, democratic impatience contains within itself a subordinate operational patience. In other words, democratic impatience is always already somewhat ‘patient.’ King’s democratic impatience therefore not only redresses democratic theory’s shortcomings, but it also generates a renewed sense of democratic possibility in our age, as democratic impatience is well suited to help us in redressing the crises and injustices deepened or generated by social acceleration. (shrink)