Mackenzie Feldman is the Founder and Executive Director of Herbicide-Free Campus, an organization committed to eliminating herbicides from schools across the country. Growing up in Hawaii, Mackenzie saw the effects that corporate agribusiness and the resulting pesticide exposure has had and continues to have on her community, and simultaneously witnessed the power of the Hawaiian food sovereignty movement to make positive change. While attending the University of California, Berkeley, Mackenzie, along with her teammate, created Herbicide-Free Cal after the two got herbicides banned from their beach volleyball courts and decided to expand the campaign to the rest of the campus. Upon graduating in 2018, Mackenzie expanded the campaign to the rest of the UCs, and then nationwide, and Herbicide-Free Campus was born. The campaign resulted in the entire University of California system going glyphosate-free and Mackenzie also worked with the Protect Our Keiki Coalition to get all herbicides banned from every public school in the state of Hawaii. Ultimately, her vision is that this issue extends beyond campuses to the EPA, and encourages more stringent regulations and systemic change from conventional to regenerative farming solutions.

Mackenzie is also a Food Research Fellow for Data For Progress, where she writes food and agriculture policy for the Green New Deal.