In this March 1938 photo, Adolf Hitler salutes German troops parading in Vienna, Austria, the country of his birth.
Adolf Hitler's rise to power contains important lessons for us today when it comes to dealing with modern-day extremists.
Residents of Baltimore, Maryland, seen here, were the object of dehumanizing language from President Trump.
Extreme, dehumanizing language like the words used by President Trump to describe Baltimore can escalate into destructive outcomes, writes a scholar of hostage negotiation.
Slavery is not so far removed. Anderson and Minerva Edwards met in the 1860s as enslaved laborers in Texas, had 16 children and lived into their 90s in a cabin a few miles from the plantations they once worked. They are photographed here in 1937.
U.S. Library of Congress
Old injustices don't simply disappear with time – they tear a nation apart.
Parenting: attachment is not, and has never been, the only way.
To stage their invasion of Nazi-held France, Allied forces created floating harbors in the English Channel where ships could safely dock to send soldiers and supplies ashore.
Royal Air Force
How engineers helped the Allies defeat Nazi Germany and win World War II.
Social status and location affected Dutch Jews' chances of survival.
Nazi leadership saw medical and pharmaceutical research as a front-line tool to contribute to the war effort.
Akanbatt / Pixabay
Medical research has a dark history of human experimentation in Nazi Germany. And we're still uncovering the extent of the horrors.
International forces advancing toward Boxer soldiers outside the Imperial Palace in Beijing, China, during the Boxer Rebellion.
Library of Congress
When is math not just math? Political conflicts have led to new study-abroad initiatives, the creation of a world-class university, the migration of mathematicians and serious educational reforms.
Too many people are spurning democracy and being seduced by propaganda, fake news and political strongmen. This First World War poster shows a giant Gibson Girl as the symbol of democracy, punching a German soldier resembling Hindenburg.
Many citizens are searching for certainty and control in uncertain times. But that means too many are spurning democracy and being seduced by fake news and political strongmen. Democracy needs our help.
Pope Pius XII.
The Vatican will open its archives on Pope Pius XII next year. An expert explains the papacy of Pope Pius XII and the fear of communism confronting much of the Western world at the time.
Is helping populate the caliphate an innocent act?
REUTERS/ Rodi Said
Hundreds of thousands of women helped the Nazi cause. Few ever faced justice.
A student speaks with Holocaust survivor William Morgan using an interactive virtual conversation exhibit at the the Holocaust Museum Houston in January 2019.
David J. Phillip/AP
In anticipation of International Holocaust Remembrance Day, a scholar explains how digital technologies can help close knowledge gaps about the catastrophe that claimed the lives of 6 million Jews.
A Facebook ad referenced in the indictment charging Russians in a plot to interfere in the 2016 U.S. presidential election.
Russians have been charged with interfering with the 2016 US presidential election. If true, it's not an isolated incident. Twice before, foreign powers tried to influence who won the Oval Office.
The government’s website for FARA.
The initial aim of the 1937 Foreign Agents Registration Act was long forgotten: the prosecution of Nazis for interfering with American democracy. But that law is startlingly relevant to the US now.
A memorial outside Pittsburgh’s Tree of Life Synagogue on Oct. 29, 2018, erected after a gunman killed 11 worshippers at the temple.
AP/Gene J. Puskar)
American anti-Semitism took an organized form in the 20th century. The German American Bund and the Silver Legion developed a unique culture of hatred for Jews that persists today in alt-right groups.
One of the photographs from Terry Kurgan’s book.
In Terry Kurgan’s book family history, however tortuous, is subsumed into a greater history of the greatest atrocity.
Being part of the resistance can be complicated.
The 'resistance' to the Trump administration has many forms, from grassroots organizing to making music. But a historian of 20th-century Germany asks whether opposing Trump is a real resistance.
Joseph Goebbels, left, shows the ‘people’s receiver’ to Adolf Hitler at a radio exhibition in 1933.
Under an authoritarian government, freedoms can come at a steep – and lasting – price.
Bramfab via Wikipedia
An all-women workforce used to weed Italy's rice fields. And they left a powerful historical legacy.
‘Anti-Semitism is treatable’ – a banner at a Warsaw demonstration.
Reuters/ Agencja Gazeta
Seventy years after the end of World War II, a battle is taking place over Polish collective memory.