I'll list works that'll be handy for taking on SJWs/Progressives.
"Why the West is Best: A Muslim Apostate's Defense of Liberal Democracy", "Defending the West: A Critique of Edward Said's Orientalism", "Koranic Allusions: The Biblical, Qumranian, and Pre-Islamic Background to the Koran", "What the Koran Really Says: Language, Text, and Commentary" by Ibn Warraq
"How the West Won: The Neglected Story of the Triumph of Modernity" by Rodney Stark
"The Invention of Racism in Classical Antiquity"
Africa and Africans in the Making of the Atlantic World, 1400-1800 by John Thronton
"Blood and Soil: A World History of Genocide and Extermination from Sparta to Darfur" by Ben Kiernan
"Why Did Europe Conquer the World?" by Philip T. Hoffman
The Atlantic Slave Trade in World History by Jeremy Black
"Nations: The Long History and Deep Roots of Political Ethnicity and Nationalism", "War in Human Civilization" by Azar Gat
"Islam and the Abolition of Slavery'' by William Clarence-Smith
"The Legacy of Jihad: Islamic Holy War and the Fate of Non-Muslims" by Andrew G. Bostom
"Race and Slavery in the Middle East" by Bernard Lewis
"Women and Slavery in the Late Ottoman Empire" by Madeline C. Zilfi
"The armies of the caliphs: military and society in the early Islamic state" and "The Prophet and the Age of the Caliphates: The Islamic Near East from the 6th to the 11th Century (Second Edition)" by Hugh Kennedy
"Challenging the Boundaries of Slavery" by David Brion Davis
"Understanding Human History" by
Michael H. Hart
Africa and Africans in the Making of the Atlantic World, 1400-1800 by John Thornton
"The Cambridge World History of Slavery: Volume 3, AD 1420–AD 1804" by Keith Bradley
"Daily Lives of Civilians in Wartime Africa: From Slavery Days to Rwandan Genocide" by John Laband
"Ethnic America: A History", "Applied Economics: Thinking Beyond Stage One", "Economic Facts and Fallacies", "Intellectuals and Race", "Race and Culture: A World View", "Conquests And Cultures: An International History", "Black Rednecks and White Liberals", "Affirmative Action Around the World: An Empirical Study" by Thomas Sowell
"Kit Carson and the Indians" by Thomas W. Dunlay
"God wills it! : understanding the Crusades", "The Concise History of the Crusades", by Thomas F. Madden
"The Crusades" "God's War: A New History of the Crusades" by Christopher Tyerman
"Prehistoric Warfare in the American Southwest" by Steven Leblanc
"North American Indigenous Warfare and Ritual Violence" by Richard J. Chacon and Ruben G. Mendoza
"The Killing Compartments: The Mentality of Mass Murder" by Abram de Swaan
"Galileo's Middle Finger: Heretics, Activists, and the Search for Justice in Science" by Alice Dreger
"The Blank Slate: The Modern Denial of Human Nature" by Steven Pinker
"The Nurture Assumption: Why Children Turn Out the Way They Do", "No Two Alike: Human Nature and Human Individuality" by Judith Rich Harris
"Evolutionary Psychology in the Business Sciences", "The Consuming Instinct: What Juicy Burgers, Ferraris, Pornography, and Gift Giving Reveal About Human Nature" by Gad Saad
"Human Accomplishment: The Pursuit of Excellence in the Arts and Sciences, 800 B.C. to 1950" by Charles Murray
"Evolutionary Psychology" by David M. Buss