In the United States, we have become accustomed to bursts of solidarity that show up during movement moments and national crises. In the past few months, people and organizations have gathered for protests against immigration enforcement, No Kings rallies, and mutual aid support. These powerful examples of episodic solidarity—which are often catalyzed by injustice, state violence, or catastrophic events—spread awareness, mobilize people, and make demands to power holders. When solidarity arrives in bursts—ignited by movement moments, urgent campaigns, or collective outrage—it tends to recede when the crisis subsides or another one takes its place. But to sustain solidarity beyond the initial spark and to transform it into a meaningful, lasting practice, we must support, organize, and buttress both short-term scaffolding and long-term infrastructure.