By tracing the rhetorical ecology of an iconic protest logo created in Denmark in 1975, this article sheds light on an important part of the rhetoric of the Danish (and global) anti-nuclear power movement and how it continues to influence collective life in unpredictable and contradictory ways. Initially, the logo created a sense of community amongst anti-nuclear power activists. It was a powerful recruitment and fundraising tool, now it circulates as nostalgia, sparking both solidarity and alienation. The article builds on interviews with members of the Danish anti-nuclear power movement and a group of Danish youth today, including the founder of a current pro-nuclear power group. It relies on theories of rhetorical agency and ecology that have pinpointed the unpredictability and interconnectedness of rhetoric, and reminds us, further, of rhetoric’s potential endurance.