She is one of the most important, yet least known activists of our time. Tirelessly leading the fight for racial and labor justice, Dolores Huerta evolved into one of the most defiant feminists of the 20th century—and continues the fight to this day, at 87.

With unprecedented access to this intensely private mother of eleven, Dolores (PBS Distribution) chronicles Huerta’s life from her childhood in Stockton to her early years with the United Farm Workers, from her work with the headline-making grape boycott launched in 1965 to her role in the feminist movement of the ’70s to her continued work as a fearless activist. Featuring interviews with Gloria Steinem, Luis Valdez, Hillary Clinton, Angela Davis, her children and more, Dolores is an intimate and inspiring portrait of a passionate champion of the oppressed and an indomitable woman willing to accept the personal sacrifices involved in committing one’s life to social change. The film is released March 27.

“In the 1970s, the national grape boycott that Dolores Huerta helped organize played out in the small rural Minnesota farming community where I grew up—supported by our Catholic church along with tens of thousands of religious organizations across the country,” says Lois Vossen, Independent Lens executive producer. “More than forty years later, Dolores is still an indefatigable architect for social change on behalf of poor, underrepresented people, urging them to seek self-determination with her refrain ‘Si Se Puede’ (‘Yes We Can’).”

It was in 1955 that she would meet a likeminded colleague, CSO Executive Director César E. Chávez. The two soon discovered that they shared a common vision of organizing farm workers and in 1962 they launched the National Farm Workers Association, which would evolve into the United Farm Workers and bring national attention to the conditions faced by farm laborers.

Dolores’s lobbying and negotiating talents helped secure Aid for Dependent Families (AFDC) and disability insurance for farm workers; she was also instrumental in the enactment of the Agricultural Labor Relations Act of 1975, which granted California’s farm workers the right to collectively organize and bargain for better wages and working conditions. While the farm workers lacked financial capital, they were able to wield significant economic power through hugely successful national boycotts. As their principal legislative advocate, Dolores became one of the UFW’s most visible spokespersons.

While directing the first National Boycott of California Table Grapes out of New York, Huerta met Gloria Steinem and was introduced to the burgeoning feminist movement which rallied behind the farm workers’ cause. Having found a supportive voice with other feminists, Huerta began to challenge gender discrimination within the farm workers’ movement.

At age 58, Dolores suffered a life-threatening assault while protesting against the policies of then-presidential candidate George Bush in San Francisco. Following a lengthy recovery, she began to focus on women’s rights, traversing the country on behalf of the Feminist Majority’s “Feminization of Power: 50/50 by the Year 2000” campaign which encouraged Latinas to run for office.

Dolores continues to work tirelessly developing leaders and advocating for the working poor, women, and children as founder and president of the Dolores Huerta Foundation. She was inducted into the California Hall of Fame in March of 2013 and has received numerous awards including The Eleanor Roosevelt Human Rights Award from President Clinton in 1998, Ladies Home Journal’s “100 Most Important Woman of the 20th Century,” and nine Honorary Doctorates from U.S. universities. In 2012, President Obama bestowed Dolores with her most prestigious award, The Presidential Medal of Freedom.