A fascinating, in-depth overview of Jewish history
Jews, God & History, Max Dimont.

Understanding the history of the Holocaust
The Holocaust: The Jewish Tragedy, Martin Gilbert
The Holocaust: A New History, Laurence Rees

Understanding fascism
Non Fiction:
The Anatomy of Fascism, Robert Paxton
Diary of a Man in Despair, Friedrich Reck
On Tyranny, Graphic Edition, Timothy Snyder
How Fascism Works, Jason Stanley

Fiction:
The Passenger, Ulricht Alexander Boschwitz
The Oppermanns, Lion Feuchtwanger
It Can't Happen Here, Sinclair Lewis
The Plot Against America, Philip Roth
THE 

Books about Theresienstadt
Theresienstadt: 1941 - 1945, the Face of A Coerced Commnity, H.G. Adler
Triumph of Hope: From Theresienstadt and Auschwitz to Israel, Ruth Elias
When Time Stopped: A Memoir of My Father's War and What Remains, Ariana Neumann
I Never Saw Another Butterfly: Children's Drawings & Poems From Theresienstadt
Life With a Star, Jiri Weil

Deep dives into German antisemitism
Why the Germans, Why the Jews, Götz Aly
Ordinary Men, Christopher R. Browning

The Jewish-Polish experience
Shtetl, Eva Hoffman

The Holocaust in the East (Poland & Ukraine)
Hitler's Furies, Wendy Lower
East West Street, Philippe Sands

The History of WWII in the Middle East
War of Shadows: Codebreakers, Spies and the Secret Struggle to Drive the Nazis from the Middle East, Gershon Gorenberg

Understanding the Holocaust from personal points of view:
Anne Frank's Diary: The Graphic Adaptation,  Ari Folman
Lily's Promise, Lily Ebert & Dov Forman
Anne Frank: The Diary of a Young Girl, Anne & Otto Frank
Daughter of Auschwitz, Tova Friedman and Malcolm Brabant
My Best Friend, Anne Frank, Hannah Pick-Golsar with Dina Kraft
Survival in Auschwitz, Primo Levi
The Drowned & the Saved, Primo Levi
Maus, Volumes I & II, Art Spiegelman
Night, Elie Weisel
The Last Days: Steven Spielberg and Survivors of the Shoah Visual History Foundation

Understanding Psychology & Holocaust Trauma
After Such Knowledge: Memory, History & The Legacy of the Holocaust, Eva Hoffman

Fascinating takes on the legacy of Anne Frank:
People Love Dead Jews: Reports From a Haunted Present, Dara Horn
Anne Frank: The Book, the Life, The Afterlife, Francine Prose

Books about the Israeli-Palestinian conflict I
1948: A Soldier's Tale - the Bloody Road to Jerusalem, Uri Avnery
I Shall Not Hate: A Gaza Doctor's Journey on The Road to Peace and Human Dignity, Izzeldin Abuelaish
Ottoman Brothers: Muslims, Christians, and Jews in Early Twentieth-Century Palestine, 
Michelle Campos
The Arab-Israeli Conflict: Its History in Maps, Martin Gilbert
How to Understand Israel in 60 Days or Less, Sarah Glidden
Catch 67: The Left, The Right and the Legacy of the Six-Day War, Micah Goodman
The Accidental Empire: Israel and the Birth of the Settlements, Gershon Gorenberg
Letters to My Palestinian Neighbor, Yossi Klein Halevi
Native: Dispatches from an Israeli-Palestinian Life, Sayed Kashua
The Palestinian People: A History, Baruch Kimmerling, Joel S. Migdal
Apeirogon, a Novel, Colum McCann
Contested Land, Contested Memory, Jo Roberts
My Promised Land: The Triumph and Tragedy of Israel, Ari Shavit
The Lemon Tree, Sandy Tolan