Lauren Regan became a lawyer for idealistic reasons: There were trees; she wanted to save them.

Then, in October 2001, the Patriot Act was signed into existence, and the landscape of environmental protest changed. Police, now equipped with military surplus gear and Homeland Security funding, began to treat protesters differently. So did the legal system.

In 2003, Regan founded the Civil Liberties Defense Center specifically to help environmental activists navigate this new legal landscape. Regan spoke with me recently about how location and legal precedent mean a lot when you’re interested in saving a landscape.