The notable historian celebrated for their work on civil rights movements worldwide is Howard Zinn. In his seminal book, "A People's History of the United States," Zinn presents history from the perspective of marginalized groups, including African Americans, women, and working-class individuals. His approach highlights the struggles for social justice and human rights, emphasizing grassroots movements and activism. Zinn’s scholarship has inspired generations of activists and historians to reconsider how history is documented and whose voices are represented in the narrative.