nazis

In a statement, Biden called the march a "sickening display" and said Nazism is a hateful poison.

Researchers are still digging into the question and sharing their findings decades after the Nazis sacked the homes of Jews during World War II.

"People should look at this place and think about our moral responsibility," says Pawel Sawicki, a longtime guide at the Auschwitz museum in Poland.

White House adviser Stephen Miller faces growing calls to resign after leaked emails show he promoted the ideas of white nationalists. Critics say this is how fringe ideas move into the mainstream.