Image by Justin Sullivan/Getty Ima... Democratic presidential candidate Sen. Bernie Sanders speaks during the Democratic Presidential Committee summer meeting on August 23, 2019 in San Francisco.

Sen. Bernie Sanders, long reluctant to open up about his personal life, revealed more in an interview with Yahoo News about his upbringing in Brooklyn and his Jewish identity.

Here’s what we learned:

Immigration is personal to him.

Yahoo reporter Hunter Walker showed Sanders the passenger manifest from the Lapland, the ship that Sanders’s father Eli rode on to immigrate from Poland in 1921. Eli’s name on the manifest was Eliasz Gitman; Sanders pointed out that, like many Jewish immigrants, Eli’s name was “changed along the way.”

Sanders said President Trump was trying to “demonize people because they were not born in this country.”

“That clearly is something that I take personally,” he said.

*The Holocaust influenced his life:

Sanders has opened up about his connection to the Holocaust before - most of his father’s relatives were killed. He said it was his biggest influence on how he thinks about immigration.

Sanders had previously rejected Rep. Alexandria Ocasio-Cortez’s comparison between concentration camps and migrant detention centers on the Mexican border. But he did say in his Yahoo interview that there is a “comparison” between Nazi Germany and Trump’s America.

“What we have is a president who is a demagogue, and the comparison is that this is a president who is a racist. And it’s unbelievable that in the year 2019 we have a president who is not using dog whistles, he is an overt racist,” Sanders said.

Hebrew school…not so much:

Bernie Sanders and his brother Larry went to Hebrew school in Brooklyn, but the senator said that, like many Jewish children, he didn’t take the experience so seriously.

“I am very proud to be Jewish. … I would tell you that I was not much of a Talmudic scholar,” he said. “I think mostly we were throwing spitballs.”

Sanders said that he learned to read Hebrew but didn’t understand most of what he was reading. “So we did speed reading,” he recounted. “We used to have races reading Hebrew. Unbelievable, but true.”

A bissel of Yiddish:

Sanders said that his family “all spoke Yiddish” in their Brooklyn apartment. “My father learned English … pretty well. He did not have an accent. My grandmother always had a very heavy accent,” he said.

When asked what Yiddish phrase Sanders would use to describe Trump, Sanders laughed and replied: “Oy vey. That’s about it.”

Aiden Pink is the deputy news editor of the Forward. Contact him at pink@forward.com or follow him on Twitter @aidenpink