According to experts who monitor the radical right, the white supremacist ideology that police say drove the Buffalo gunman has begun moving from the extremes into the mainstream. This is the fifth episode of a five-part series produced in collaboration with The WNET Group’s reporting initiative Exploring Hate.

Violent attacks involving extremist ideology, like the Buffalo rampage, began to rise in the last decade, but officials were slow to recognize homegrown threats. This is the fourth episode of a five-part series produced in collaboration with The WNET Group’s reporting initiative Exploring Hate.

In the years before Barack Obama was elected, many groups on the extreme right kept a relatively low profile. With the election of a Black president, that changed. This is the third episode of a five-part series produced in collaboration with The WNET Group’s reporting initiative Exploring Hate.

Anti-government propaganda, military deployment and the F.B.I. raid in Waco, Texas, radicalized Timothy McVeigh and led to the Oklahoma City attack. This is the second episode of a five-part series produced in collaboration with The WNET Group’s reporting initiative Exploring Hate.

The killing of radio host Alan Berg exposed a new kind of right-wing extremism. This is the first episode of a five-part series in collaboration with The WNET Group’s reporting initiative Exploring Hate.

The defeat of Robert Bork’s nomination to the Supreme Court in 1987 changed the way justices are confirmed today.

Biased ideas about a link between body size and health have led many people to dismiss unexpected scientific findings.

Both parties play the redistricting game, redrawing electoral boundaries to lock down power. Are you a teacher? Check out our teaching resources for this video.

Officials who drove the decades-long war in Afghanistan look back on the strategic mistakes and misjudgments that led to a 20-year quagmire. For teachers: This video is part of a collection of resources including four short films, each accompanied by a lesson plan and student activity.

In the heat of the Cold War, Joe McCarthy’s anti-communist crusade became a media sensation.

Scientists who venture into rainforests and bat caves explain how viruses, like Covid-19, spill over from animals to people, and what we must do to stop the next pandemic.

Politics, public health and a pandemic. What we didn’t learn from HIV.

Migrant children in federal custody have tested positive for Covid-19, reopening a legal battle over the rights of children in custody.

Bernie Sanders and Joe Biden are the icons of an ideological split among today’s Democrats, echoing a similar split in the Republican party of 1964.

How can a president continue to govern with an impeachment trial looming? President Clinton and President Trump adopted very different strategies.

Sexual harassment. Discrimination. Workplace inequity. Google’s employees demonstrated against unfair practices. But has anything changed?

When N.F.L. players, starting with Colin Kaepernick, took a knee during the National Anthem to protest they ignited an uproar over injecting politics onto the playing field.

With every new advance in prenatal genetic screening, the ability to prevent suffering has also sparked difficult questions about what should count as “a disease” versus “a difference,” and whether we’re in danger of wiping out certain segments of the population. This story was produced in collaboration with PBS, American Experience.

From naming the problem in the 1970s, to bringing it out of the shadows in the 90s, to a growing accountability today – the evolution of sexual harassment in the workplace.

As the U.S. tightens restrictions on women’s reproductive health, the new season of The Handmaid’s Tale seems more relevant than ever. We look back on a group of women who broke sexual taboos in the 1970s, and how the fight over women’s bodies continues today.

Some issues are too fundamental for a party to withstand, and the consequences can last for a generation.

Sometimes the most important speech at the convention isn’t delivered by the nominee.

In 1831, a radical third party had a new idea for selecting a presidential candidate, and it’s still in use today: the national nominating convention.

Donald Trump’s candidacy wasn’t the first time the Republican Party was split by an outsider declaring war on the establishment elite.

In 1976, Ronald Reagan found owning the soul of a party isn’t the same as taking home its nomination.