Meet the Staff
Lt. Diane Goldstein (Ret.)
Executive DirectorExecutive Director Lieutenant Diane Goldstein (Ret.) is a 21-year law enforcement veteran of the Redondo Beach (CA) Police Department; she retired as their first female lieutenant in 2004, having worked in investigations, crisis negotiation, gang enforcement and special investigations, community relations, and community policing. Lt. Goldstein serves as the face of the organization, directing LEAP's vision, interacting with major funders, serving as the link between LEAP's staff and Board of Directors, and representing the organization in the media and to the general public. Lt. Goldstein has been an official representative of the Law Enforcement Action Partnership since 2010, serving on the Board of Directors from 2014 - 2020, and as Board Chair from 2018 - 2020. She joined the staff as Executive Director in 2020. View full bio
Darby Beck
Chief Operating OfficerDarby oversees the Law Enforcement Action Partnership's day-to-day operations, making decisions regarding administrative business, strategic planning, and partnerships. She holds an M.A. in Political Science with fields in Public Law, American Politics and Political Communication from the University of Washington and two B.A.s, in History and Political Science, from Trinity University. While at the UW, she studied criminal justice and TA’d a number of classes focusing on the political, social and legal implications of the War on Drugs, and her thesis examined media framing of a harm reduction model. Darby has interned for federal judge Orlando Garcia, as well as working in communications and research for a political nonprofit.
Amos Irwin
Program DirectorProgram Director Amos Irwin manages the recruitment and training of Law Enforcement Action Partnership speakers (to inquire about become a speaker, contact Speakers@LawEnforcementAction.org) , as well as collaboration with LEAP’s ally organizations. Previously, he served as Chief of Staff at the Criminal Justice Policy Foundation. Amos has taught courses on the criminal justice system at the Northeastern University Foundation Year program and the Tufts University Osher Center. He has also published cost-benefit evaluations of supervised injection facilities in the Harm Reduction Journal and Journal of Drug Issues. Amos has a Master’s degree from the Tufts University Fletcher School of Law and Diplomacy and a Bachelor’s degree from Amherst College. He speaks Spanish, Chinese, French, and German.
Eric Lane
Director of Development & Communications
Monica Westfall
Development and Communications ManagerMonica is LEAP's Development and Communications Manager. Monica holds a degree in IT Management from American Military University. Prior to joining LEAP, she worked for the Virginia State Police as the executive secretary supporting the Counter-Terrorism and Criminal Interdiction Unit, including Asset Forfeiture, Marijuana Eradication and Drug Diversion. She also worked in the training academy, and the department of human resources for the VSP. Outside of work, Monica enjoys spending time with her grandson and adult children, going to music festivals, and she is an avid user of virtual reality.
Esi Mathis
Program ManagerEsi Mathis, LEAP's Program Manager, is a social justice advocate who is deeply concerned about individuals and families impacted by mass incarceration. Her advocacy is fueled by trauma-induced experiences of several family members. She has a bachelor’s degree in Business Administration from Florida A&M University and a master’s degree in Theology from Fuller Theological Seminary. She is currently enrolled as a PhD student in the Leadership and Change program at Antioch University. Her foreign travels include London, Israel, India, Ghana and Zambia.
Lionel King
Program SpecialistLionel King is an ethnographer, author, and researcher. He holds a PhD in Intercultural Relations. His research centers on the use of religious/cultural practices in mental health treatment. Lionel is a New Orleans native and a proud husband and father.
Mariama Taifa-Seitu
Program AssociateMariama is the Program Associate for LEAP. She has a Bachelor’s degree in journalism from Temple University and a Master’s degree in international affairs from The New School University. Prior to joining LEAP, Mariama worked as an editor and writer for the U.S. Department of Defense and was a research consultant with advocacy groups on criminal justice reform and reparatory justice initiatives. She is a photographer, digital artist, and avid global traveler.
Daut'e Martin
Program AssistantDaut’e Martin is the Program Assistant for LEAP. Daute’s passion for social reform is fueled by her experiences growing up in New Orleans after Hurricane Katrina. She holds a bachelor's degree in Africana Studies from the University of Notre Dame. Daut’e is an advocate for social reform that will improve the quality of life for all people. Outside of work, she enjoys cooking, journaling, and spending time with family and friends.