When major movements rock the course of American history, Black voices and perspectives are often left out—out of textbooks, out of major museums, and out of public record.

“I think just even knowing and seeing that in that moment is understanding that our history has not always been documented, according to the dominant structures that did that type of documentation in this country,” says Williams, who is director of the Center for Digital Scholarship at the University of Chicago Library. “So, the importance I think of all of us being in our respective spaces and trying to elevate the histories, the stories, the narratives, the material culture, all of it, of Black people in this country is so important.”

Much of that history had not yet been recorded. Last year, the Blackivists consulted with members of the Illinois chapter of the Black Panther Party. An important part of the process was capturing the organization’s oral history.

Recently, citizen-recorded video has helped dispel police accounts of misconduct: a 75-year-old man pushed to the ground in Buffalo, New York; two students violently arrested in Atlanta, Georgia; beanbag ammunition shot at protesters in Austin, Texas. Stressing that social media isn’t an archive, the Blackivists say archivists can help people properly archive what they capture. The group published a guide this month that provides tips for organizers, protesters, and anyone who wants to document a movement.