[5][6] Her activism began with a trip to Colorado in the mid-2000s[5] where she observed earth dug up by an oil-and-gas industry project, deciding to make and post protest signs in front of the operation.
At the Des Moines Occupy protest, she met members of the Catholic Worker movement and was attracted to their social justice mission.
[5] When she learned that Northrop Grumman was developing the RQ-4 Global Hawk drone, she abandoned plans to leave the United States and focus on her spiritual life.
[5] Instead, she visited the facility on the Feast of the Holy Innocents, introduced herself to the guard on duty, and then smashed a window and a door with a sledgehammer.
[6] Reznicek opposed the Dakota Access Pipeline[2][3] and in the spring of 2016 she began walking and hitchhiking to Standing Rock Reservation to join in the protests against it.
[5] In November 2016, Reznicek and fellow activist and Catholic Worker Ruby Montoya burned a section of the pipeline at a worksite outside of Newell, Iowa,[2][3][6] punching holes in coffee cans, filling them with motor oil, and placing them inside cabs of machinery after being lit.
[2] Between March and May 2017, Reznicek used oxyacetylene cutting torches and gasoline-soaked rags to damage or destroy other sections of the pipeline around Iowa and South Dakota.