This article revisits the scholarship on emotion in composition studies and extends this work through a consideration of emotion in community-based writing courses. With examples from student reflection essays from one such course, Writing With the Community, I explore emotion as a generative aspect of the students' semester writing projects for community organizations. In particular, I examine students' emotional responses to their community work, which include empathy, shame, anger, and unease, as I argue that students' emotions were an effective means of attaining their writing goals and a necessary component of their desire for social action and justice. I also offer three concepts from education theorists--emotional scaffolding, encouraging students to inhabit an ambiguous self, and emotion as a mode of critical inquiry--which I develop as strategies for achieving common goals in community-based writing courses.