Meet Our Team
Mr. Roberts is a graduate of The University of Texas at San Antonio with a Bachelor’s in Business Administration, Our Lady of the Lake University with a Master’s in Business Administration, and Golden Gate University School of Law with a Doctor of Jurisprudence and Specialization Certificate in Business Law (with distinction). Mr. Roberts transitioned into the office after serving as General Counsel to the Peralta Community College District. He previously served as Chief of Staff to the Chancellor and Director of Employee Relations and Diversity Programs. Mr. Roberts has received both the Rose Elizabeth Bird Award – Professionalism and Integrity and the Paul S. Jordan Achievement Award- Service and Contribution. Mr. Roberts has also completed Doctoral work at Saint Mary’s College of California.
Mr. Lewis enters the Alameda County District Attorney’s Office with 30 years of professional law enforcement experience in planning and managing complex investigations, training and tactical field operations. Most recently, Mr. Lewis served as Captain of Police for the Oakland Police Department Bureau of Field Operations for Area 5. He also served as Special Operations Division Commander and Criminal Investigations Division Commander as well as Bureau of Field Operations 1 Watch Commander, Internal Affairs Administrative Commander and Patrol Division Watch Commander. He is a graduate of Chabot College with an Associate of Arts in Education, a Bachelor of Arts in Public Administration from the University of San Francisco and a Master of Arts in Leadership from St. Mary’s College.
Tara has over 20 years of experience working within and closely with local and state governments to provide services and improve outcomes for individuals and families impacted by criminal justice systems. As the DAO’s Assistant Chief of Administration and Operations Tara advances innovation, research, and operational policy on behalf of the District Attorney’s Office. To meet these goals she sets strategic priorities under the direction of the District Attorney and in collaboration with senior staff. In 2023, Tara led the team whose proposal to combat Organized Retail Theft was recently awarded a two-million-dollar grant from the state. The grant enables ACDAO to fund a new three-person prosecution unit dedicated to complex data analysis, investigation and vertical prosecution. In 2024 Tara led the collaborative efforts resulting in one of the most successful grant award periods in recent ACDAO history. In addition to annual and reoccurring awards, the office secured over $15 million in competitive federal and state grant funds.
Prior to joining Alameda County, Tara served the City and County of San Francisco for over 12 years. She was a member of the leadership team at the S.F. District Attorney’s Office where she wrote and successfully advocated for change in state law and local policy to improve victim services, address sexual exploitation, advance smart sentencing reform, increase tools for public accountability and data transparency. In this role Tara advanced the first public prosecution data dashboard in the state of California. In addition, Tara managed extensive portfolios of federal, state and local grants, having secured over $20 million dollars in grants.
Tara earned her B.S. in Criminal Justice with a minor in International Politics from Northeastern University, her M.P.P. from the Goldman School of Public Policy at UC Berkeley, and was a distinguished Hansard Scholar at the London School of Economics and Political Science.
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Tiffaney Gipson (she/her) is a Senior Assistant District Attorney at the Alameda County District Attorney’s Office and the Chief of the Advancing Justice Bureau, which includes the Juvenile Justice Bureau, Collaborative Courts, the Civil Rights Bureau, Consumer and Environmental Justice Bureau, Insurance and Auto Fraud Bureau, and the Real Estate Fraud and Elder Abuse Units.
A veteran prosecutor for twenty-eight (28) years, SADA Gipson began her career as a prosecutor in the San Francisco District Attorney’s Office, where she specialized in Domestic Violence and Juvenile Justice cases. After nineteen (19) years at the SFDA, SADA Gipson was hired by the Alameda County District Attorney’s Office, where her primary focus has been prosecuting human trafficking offenders and supporting victims of human trafficking in the Juvenile Justice Bureau. SADA Gipson currently leads the office’s Human Exploitation Assistance Response Team (H.E.A.R.T.), which is a team of policymakers, inspectors, attorneys from the Anti-Slavery Prosecution Unit, and advocates created to eliminate silos and work collaboratively to eradicate human trafficking.
SADA Gipson is a life member of Delta Sigma Theta Sorority, Inc., a public service organization. For thirty-six years, she has worked as an advocate for social justice and equity for underserved populations, women, and children. In her free time, she enjoys reading, bicycling, and traveling with her husband and daughter.
Justin Kollar is an Assistant District Attorney at the Alameda County District Attorney’s Office and serves as the Chief of the Gender Justice Division, which includes the anti-slavery, domestic violence, and sexual assault prosecution teams as well as the Office’s Victim/Witness Assistance Division and the Alameda County Family Justice Center.
Before coming to Alameda County, Justin served from 2012-2021 as the elected Prosecuting Attorney for the County of Kauai, Hawaii. Justin also served as a Deputy County Attorney (providing legal advice and training to local law enforcement) and a Deputy Prosecuting Attorney for the County of Kauai, and clerked for the Honorable Daniel R. Foley, Associate Judge (ret.) of Hawaii’s Intermediate Court of Appeals. Justin also served as the first Chief of Staff for Fair & Just Prosecution; a nonprofit organization dedicated to supporting a network of elected reform-minded prosecutors across the country.
Justin has also served on many public and private boards, commissions, committees, and task forces and held leadership roles in several civic service organizations. Justin lives in Oakland’s Fruitvale District.
Demarris Evans is a Senior Assistant District Attorney in the Alameda County District Attorney’s Office where she heads the Civil Rights Bureau housing the following units: Post-conviction, resentencing and re-entry, conviction integrity, racial justice, criminal record expungements, capital case litigation, restorative justice, public accountability and grand jury. Previously, she was the Managing Attorney for the Collaborative Courts and Mental Health Units of the San Francisco District Attorney’s Office. She worked as a trial attorney for the San Francisco Public Defender for over 20 years where she also led the Racial Justice Committee. She served on the attorney panel responsible for calibration and scoring of the California Bar Exam for over 15 years. Demarris was a member of the San Francisco Bar Association’s Criminal Justice Task Force where she chaired the Bias and Policing Subcommittee and participated in San Francisco Police Department Executive Sponsor Workgroups designed to implement law enforcement reform. She has also been on the faculty at San Francisco State University in the Department of Race and Resistance Studies. Her focus is on racial equity, power and privilege.
In addition to her legal practice, Demarris is engaged in facilitation, training and teaching in areas of restorative justice, racial equity, mindfulness, healing and human potential. She is a graduate of the Gerry Spence Trial Lawyers College, the Warrior One Mindfulness in Law Teacher Training Program and the Dedicated Practitioners Program at Spirit Rock Meditation Center where she began her Vipassana practice in the early 2000’s and now sits on it’s Board of Directors. She is a co-facilitator for the Law and Social Change Jam offered by YES! and the Effective Communications Across Differences Seminars offered by the Ninth Judicial Circuit Historical Society. Demarris obtained her Juris Doctorate degree from Santa Clara University and her Bachelor of Arts degree in English from University of California, Berkeley.
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Navigating the media, strategic messaging, and creating successful communications audio/video projects are among the skills Haaziq Madyun brings to the Alameda County District Attorney’s Office.
Mr. Madyun is an award-winning multimedia journalist with more than 20 years of experience as a communications professional here in the San Francisco Bay Area. Over those two decades, Mr. Madyun worked as an on-camera television reporter, primarily covering major crime and court stories, including breaking many exclusives for KRON 4 News.
Not long into his career, Mr. Madyun developed a reputation as a trusted source in the community for reporting important information. He brings with him a vast network of useful communications assets and resources that were activated and used on day one as Communications Director for the Alameda County District Attorney’s Office.
Ms. LaTonia Peoples-Stokes is a business and administrative executive with over 25 years of experience in government and public service who specializes in process automation, organizational development, strategic planning, and project management. Ms. Peoples-Stokes is the Administrative Chief of Staff to the District Attorney and Head of the Administrative Services Division where she manages a team of 140 staff members across the organization.
Ms. Peoples-Stokes is a graduate of John F. Kennedy University with a Bachelor of Science in Business Administration and a Master of Public Administration, with a specialization in Policy Analysis and Public Management, from Cal State East Bay.
Prior to coming to the Office of the District Attorney Ms. Peoples-Stokes served as the Deputy Assistant District Secretary with the Bay Area Rapid Transit District (BART) and Senior Administrative Analyst to the Chief of Police. She also previously worked as a Senior Contracts Administrator with Sandia National Laboratory in Livermore, Assistant Clerk of the Board of Supervisors, City and County of San Francisco, as well as Clerk of the Board with the Alameda County Transportation Commission.