Cora Weiss: A Legacy of Activism and Advocacy

Cora Weiss, a prominent figure in the fight for gender equality, international peace, and civil rights, passed away on December 8, 2025, in Manhattan at the age of 91. Her activism spanned over five decades, during which she played a crucial role in significant movements, including the anti-Vietnam War protests and campaigns for nuclear disarmament.

New York Times

In 1961, while raising her children in Riverdale, Bronx, Weiss became involved with Women Strike for Peace, a grassroots organization focused on opposing nuclear weapons testing. This engagement marked the beginning of her extensive activism. Weiss and other members of the group conducted research on the effects of nuclear testing, including testing their children's baby teeth for radioactive isotopes. Their findings, which revealed elevated levels of strontium-90, helped raise awareness about the dangers of nuclear fallout and contributed to the eventual signing of the Limited Test Ban Treaty in 1963 by President John F. Kennedy.

New York Times

Cora Weiss emerged as a leading voice within Women Strike for Peace, which became a pivotal organization in the 1960s. The group's efforts not only highlighted the dangers of nuclear testing but also transitioned to opposing the Vietnam War, reflecting the evolving landscape of social justice activism during that era. Weiss's belief in civil society was deeply influenced by her experiences with the organization, as she stated, “I believe in civil society, and my experience of Women Strike for Peace led to that strong belief, because we managed to get things done.”

New York Times

Weiss's contributions to social justice movements underscore the importance of grassroots activism in shaping public policy and societal norms. Her work with Women Strike for Peace exemplifies how collective action can lead to significant legislative changes, such as the ban on atmospheric nuclear testing. Weiss's legacy continues to inspire new generations of activists advocating for peace and equality.

New York Times

Following her passing, tributes poured in recognizing Weiss's lifelong commitment to activism. Her son, Daniel Weiss, confirmed her death, reflecting on her profound impact on both local and global scales. Weiss's belief in the power of civil society and her relentless pursuit of justice resonate in the ongoing struggles for peace and equality today.

New York Times

• “I believe in civil society, and my experience of Women Strike for Peace led to that strong belief, because we managed to get things done,” — Cora Weiss

New York Times

Cora Weiss's death marks the loss of a significant figure in the history of social justice, whose efforts have left an indelible mark on the movements for peace and equality. Her legacy serves as a reminder of the power of activism in effecting change.

New York Times