Cullors was born in Los Angeles, California. She grew up in Pacoima, a low-income neighborhood in the San Fernando Valley. She became an activist early in life, joining the Bus Riders Union as a teenager during which time she attended a year-long organizing program led by the Labour Community Strategy Centre. She learned about Marxist thinkers and revolutionaries, critical theory and social movements from around the world, while practicing activism. Cullors recalls being forced from her home at sixteen when she revealed her queer identity to her parents. She was involved with the Jehovah's Witnesses as a child, but later grew disillusioned with the church. She developed an interest in the Nigerian religious tradition of Ifá, incorporating its rituals into political protest events. She told an interviewer in 2015 that "seeking spirituality had a lot to do with trying to seek understanding about my conditions—how these conditions shape me in my everyday life and how I understand them as part of a larger fight, a fight for my life." She later earned a degree in religion and philosophy from UCLA. She also received an MFA from USC.
Along with community organizers and friends Alicia Garza and Opal Tometi, Cullors founded Black Lives Matter. The three started the movement out of frustration over George Zimmerman's acquittal in the shooting of Trayvon Martin. Cullors created the hashtag in 2013 to corroborate Garza's use of the phrase in making a Facebook post about the Martin case. Cullors further described her impetus for pushing for African-American rights stemming from her 19-year-old brother being brutalized during imprisonment Los Angeles County jails. Cullors credits social media being instrumental in revealing violence against African Americans, saying: "On a daily basis, every moment, black folks are being bombarded with images of our death... It's literally saying, 'Black people, you might be next. You will be next, but in hindsight it will be better for our nation, the less of our kind, the more safe it will be." In 2017, she said that the movement would not meet with United States presidentDonald Trump just as it wouldn't have met with Adolf Hitler, as Trump "is literally the epitome of evil, all the evils of this country — be it racism, capitalism, sexism, homophobia."
Cullors defines herself as an prison, police and "militarization" abolitionist, a position she says is inspired by "a legacy of black-led anti-colonial struggle in the United States and throughout the Americas". She also favors reparations for what she describes as "the historical pains and damage caused by European settler colonialism", in various forms, such "financial restitution, land redistribution, political self-determination, culturally relevant education programs, language recuperation, and the right to return ". She cites the activist and formerly incarcerated Weather Underground member Eric Mann, as her mentor during her early activist years at the Bus Riders Union of Los Angeles. Her ideological inspirations include Angela Davis, Frantz Fanon and Audre Lorde. Asked whether she believed in violence as a method of protest, she has said that she believes in "direct action, but nonviolent direct action", and that this was also the belief of the Black Lives Matter movement. In February 2020, she co-endorsed Senators Elizabeth Warren and Bernie Sanders in the 2020 Democratic Party presidential primaries.
In June 2020, in honor of the 50th anniversary of the first LGBTQ Pride parade, Queerty named her among the fifty heroes “leading the nation toward equality, acceptance, and dignity for all people”.
Works
In 2014 Cullors produced the theatrical piece POWER: From the Mouths of the Occupied, which debuted at Highways Performance Space. She has contributed articles about the movement to the LA Progressive, including an article from December 2015 titled "The Future of Black Life" which pushed the idea that activists could no longer wait for the State to take action, and called her followers into action by encouraging them to begin building the world that they want to see. Her book, was published in January 2018.