Most scholarship on political rhetoric views it as an exercise in changing the minds of an audience. However, we see numerous examples of political speech aimed at those who already agree with the speaker, to motivate them to act on judgments they have already made. This kind of discourse is often dismissed as pandering, or the “red meat” rabble‐rousing that contributes to polarization. I draw upon Frederick Douglass to render a more complete account of this speech, which I term “hortatory rhetoric.” Douglass draws upon the prophetic tradition of Black Christian preaching to develop an alternative for when persuasion has reached its limit. This kind of speech raises a set of normative difficulties that differ from those raised by the rhetoric of persuasion, which Douglass helps us to think through. He provides a framework for understanding when it might be permissible or even desirable to abandon persuasion for exhortation.