The dismantlement of evidence-based environmental governance by the Trump Administration requires new forms of activism that uphold science and environmental regulatory agencies while critiquing the politics of knowledge production. The Environmental Data and Governance Initiative (EDGI) emerged after the November 2016 U.S. Presidential elections, becoming an organization of over 175 volunteer researchers, technologists, archivists, and activists innovating more just forms of government accountability and environmental regulation. Our successes include: 1) leading a public movement to archive vulnerable federal data evidencing climate change and environmental injustice; 2) conducting multi-sited interviews of current and former federal agency personnel regarding the transition into the Trump administration; 3) tracking changes to federal websites. In this article, we conduct a "social movement organizational autoethnography" on the field of movements intersecting within EDGI and on our theory, tactics, and practices. We offer ideas for expanding and iterating on methods of public, collaborative scholarship and advocacy.