Our People

Uncrowded brings together several dedicated professionals, all of whom are either volunteering their time or receive a small support stipend.


Piper Hoffman is the Executive Director of Uncrowded. She has worked as a staff attorney at the Animal Legal Defense Fund, as a partner at Outten & Golden LLP, and as Policy Director at The Partnership for the Homeless. She served as a law clerk for Judge Gladys Kessler of the United States District Court for the District of Columbia. She has taught at New York Law School and Brooklyn Law School. Piper received a B.A. magna cum laude and with honors in political science from Brown University. While earning a J.D. cum laude from Harvard Law School she interned at the American Civil Liberties Union. She has chaired or co-chaired several bar association committees, including in the American Bar Association. Piper is a member of the New York City Bar Association’s Animal Law Committee, and is admitted to practice in New York, the District of Columbia, and Massachusetts.


Caitlin Zittkowski is Director of the Legal Program and General Counsel for Uncrowded. In addition, Caitlin works on various environmental and animal law issues as a law fellow for Meyer Glitzenstein & Crystal, a public interest law firm in Washington, D.C. Caitlin received her J.D. from the University of Michigan Law School. Her previous experience includes serving as a law clerk with Earthjustice in Washington, D.C., and interning with the Humane Society Legislative Fund. She also participated in her school’s environmental law clinic, which works with the National Wildlife Federation’s Great Lakes regional office. Caitlin has also worked on civil rights issues as an intern for Legal Voice (formerly the Northwest Women’s Law Center), the ACLU of Michigan, and the Gay-Straight Alliance Network. Caitlin is a member of the California bar.


Christopher Liptrot is Director of the Corporate Program for Uncrowded. He also represents the sustainable food company Hampton Creek as a relationship specialist in the DC-Metropolitan area. Christopher received his bachelor’s degree in evolutionary anthropology from Rutgers University, graduating summa cum laude. As an undergraduate he studied conservation and field biology in Kenya and Costa Rica. Christopher is passionate about working to reform industry to create a more sustainable, more compassionate society. Previously, he has worked on national corporate campaigns as outreach coordinator for Compassion Over Killing. He has also aided several legislative campaigns with the Humane Society of the United States, as well as other grassroots efforts with various DC area non-profits.

Tatiana Mendez

Tatiana Méndez is Director of the Grassroots Program for Uncrowded. Born and raised in Bogotá, Colombia, Tatiana came to the United States in 2009. Since her arrival, she has worked tirelessly for a variety of causes, with her passions being human rights and animal rights. A dedicated volunteer with many strengths, she specializes in translating, social media, and communication. She is currently pursuing a B.A. in International Studies. Aside from her work in activism, Tatiana is also an avid photographer who has received acclaim for her work and has had many of her photographs featured by prominent organizations and publications.


Sarah Johnson is Secretary of the Board of Directors for Uncrowded. She is practicing Registered Cardiovascular Nurse in San Francisco and has over ten-years experience as a critical care nurse. Sarah also just received her Master in Science in Nursing and Family Nurse Practitioner from Georgetown University, graduating with high honors. She is currently launching her Non-Profit, Love Library, focused on integrative medicine, primary prevention and health advocacy. Additionally, Sarah was a regional leader for the Prop 37 Campaign in California to Label Genetically Modified Foods. She is currently embarking on a worldwide tour to study native health, healing, nutrition and woman’s issues.

2013 Bio photo(1)

Courtney Dillard is Treasurer of the Board of Directors for Uncrowded and is a Continuing Instructor in the Communication & Media Studies Department at Willamette University in Salem, Oregon. She received her Ph.D. in Communication Studies from the University of Texas- Austin and her MA from The University of North Carolina- Chapel Hill. For over a decade, Courtney’s research agenda has focused on persuasion and social change. In the last several years, she has primarily taught Public Speaking, Mass Media & Persuasion, Political Communication and Designing Persuasive Campaigns. She has also worked to support the persuasive efforts of nonprofit organizations and state agencies on topics ranging from healthcare to the environment. In 2008 she founded Common Good Persuasion, a communication consulting agency.


Carter Dillard is Founder and President of the Board of Directors for Uncrowded. He has published over a dozen articles, including peer-reviewed pieces, on population ethics in journals published by Yale, Duke, Northwestern, and other universities, and he currently sits on the Steering Committee for the Population Ethics: Theory and Practice research project at the Future of Humanity Institute, University of Oxford. Carter also serves as Director of Litigation for the Animal Legal Defense Fund, and previously served as General Counsel for Compassion Over Killing and as Director of Farm Animal Litigation for the Humane Society of the United States. He began his career as an Honors Program appointee to the U.S. Department of Justice and later served as a legal adviser to the U.S. Department of Homeland Security, in the National Security Law Division. He has taught on the faculties or held appointments at Lewis and Clark Law School, Emory University School of Law, and Loyola University New Orleans, College of Law. He holds a B.A. from Boston College, a J.D., Order of the Coif and with honors, from Emory University, and an LL.M. from New York University, where he wrote his thesis – on a deeply theorized right to have children – under Jeremy Waldron.

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