Using a comparative methodology, this essay examines how and why longshore workers in both the San Francisco Bay area and Durban demonstrate a robust sense of working-class internationalism and solidarity. Longshore workers are more inclined than most to see their immediate, local struggles in larger, even global, contexts. Literally for decades, workers in both ports used their power to advocate for racial justice at home and in solidarity with social movements globally. While such notions might seem outdated in the twenty-first century, as unions have been on the decline for some decades, longshore workers grounded their ideals in the reality that they still occupied a central position in global trade. Hence, they combined their leftist and anti-racist ideological beliefs with a pragmatic understanding of their central role in the global economy. While not the norm, these longshore workers’ attitudes and actions demand attention, as they challenge the notion that workers in recent decades are powerless to shape their world.