Who we are

Police violence is a disabling experience. We know this firsthand as the surviving sisters of Sean Monterrosa, who was killed by the Vallejo Police Department on June 2, 2020. In the aftermath of Sean’s tragic loss, our family has transformed pain into power—fueling an unyielding movement for justice, accountability, and systemic change.

We—Michelle and Ashley Monterrosa—founded and lead The Sean Monterrosa Project (TSMP), a multifaceted initiative confronting systemic injustice and reclaiming the narrative surrounding police violence. Our mission is to orchestrate transformational change in the systems that shape communities, and public safety—all while honoring Sean’s legacy.

What We Do

We advance our mission through:
Policy Advocacy – Fighting for legislative and policy changes that prevent police violence.
Narrative Change – Reclaiming our stories and shifting public perception of state violence.
Community Organizing – Mobilizing impacted families and communities to demand justice.
Cultural Strategies – Using art, storytelling, and creative activism to drive change.
Civic Engagement – Empowering communities of color to lead systemic transformation.

At TSMP, we partner with community organizations, policymakers, impacted families, and local advocates to prevent harm, foster collective healing, and push for systems change. By uplifting Sean’s life and legacy, we galvanize communities to take action and challenge the criminal legal system at its core.

Our Vision

The Sean Monterrosa Project is more than an initiative—it is an incubator of imagination and world-making. We draft blueprints for a future that centers the wisdom, lived experiences, and leadership of impacted families and those who have been system-involved. By bringing together stakeholders and directly addressing police misconduct, we create pathways to prevent future harm and build lasting community safety.

Together, we are shifting policy, challenging power, and building a world where justice is not just a demand—but a reality.