In Origins of Totalitarianism, Arendt traced the history of anti-Semitism in the west and repeatedly pointed out that the horrors of totalitarianism were possible because ordinary people did nothing to stop them.

In 18th century America, a Quaker preacher known as the Public Universal Friend declared themselves to be neither a man nor a woman and challenged contemporary views on race and gender.

Free Black communities living on the margins of colonized America were not unusual. Indeed, they were common enough that their members were given a name: Maroons.

Within the convent, some Renaissance women could find a degree of independence and power, and even pursue the male-dominated field of art.

A 1990 law allows Native tribes to reclaim remains and other items taken from indigenous graves and put in museums. But more than 110,000 remains and funerary remains have yet to make their way home.

When medieval mystic Marguerite Porete came under attack from the church for her book, The Mirror of Simple Souls, she did what would infuriate church leaders the most. She refused to acknowledge their authority.

As historians try to fill in the gaps and magnify stories from marginalized groups, how do we reconcile victories that came from stepping on other marginalized groups?

Artemisia Gentileschi was the most celebrated female painter of the 1600s. She channeled the traumas of her life, including sexual assault by her tutor and the harrowing trial that followed, into evocative works that put women front and center.

The AIDS Coalition to Unleash Power was founded in 1987 to press government and religious authorities to take HIV/AIDS seriously at a time when it was dismissed as "the Gay Plague."

There was plenty of prejudice against Native Americans in the 1860s, yet as the Civil War raged on, a group of Native American soldiers from Michigan mobilized to fight for the Union.