From Constantinople to Seine-Saint-Denis: The Record of Islamic Conquest, and Europe’s Immigration Bill.
In 846, Arab raiders landed near Rome and sacked the two great basilicas that stood outside its walls, St. Peter’s and St. Paul’s. Pope Leo IV answered by building a three-kilometer wall around the Vatican. It still stands.
This page sets out what the record documents about Islamic conquest, then what Europe’s immigration experience shows today, then a marked argument for America. The history concerns specific armies, states and groups, not the roughly 1.9 billion Muslims alive now.
- 4,849Christians killed for faith, 2025Open Doors World Watch List 2026; 3,490 of them in Nigeria, about 72%.
- 1–1.25MEuropeans enslaved by Barbary corsairsHistorian Robert Davis’s estimate for 1530–1780; other historians dispute the method.
- 5,721boys named Muhammad, England and Wales, 2024ONS count for that spelling alone, the top boy’s name; Mohammed and Mohammad are counted separately.
- 2.5×suspect rate, foreign-born vs. native SwedesSveriges Radio’s report on a Brå study; Brå says age distribution explains much of the excess, and most people of every background are not suspected of any crime.
Pastor Jack Hibbs of Calvary Chapel Chino Hills has taught on Islam for years. His podcast episode “The Dark History of Muhammed and Why It Matters” (May 21, 2026) features author Bill Federer on Muhammad’s life and the origins of Islam, and Calvary Chapel lists his earlier talks, including “The Rise of Islam” (2007).
This is a pastor’s commentary, not historical scholarship. Civic Intelligence has not transcribed the episode, so nothing on this page is quoted from it. Where this page cites history, it cites historians and primary records.
The 846 raid struck from the sea. The raiders could not breach the Aurelian Wall, so they plundered what lay outside it, including Old St. Peter’s, per Medievalists.net and the Catholic Encyclopedia. Leo IV enclosed the Vatican hill with a new wall, completed in 852. It was a defensive answer to a documented attack.
Six centuries later, in 1453, Ottoman troops under Sultan Mehmed II took Constantinople. Popular accounts describe three days of plunder and estimate 30,000 to 45,000 people enslaved. Historian and commentator Bill Federer argues that the loss of that gateway is why Columbus sailed west. It is a real contributor, not the whole cause. Portuguese control of the African route, the Reconquista and Columbus’s own religious convictions all weighed in, and trade through the region went on after 1453 at higher cost, per the sources below.
Three tactics recur in the record: massacre as a tool of terror, enslavement as an economy, and sexual violence against captives. When Timur took Isfahan in 1387, his army killed about 70,000 people and piled their skulls into dozens of pyramids, per Medievalists.net. Many of Timur’s victims were Muslims.
Slavery was a business. Barbary corsairs from Tunis, Algiers and Tripoli seized nearly the entire village of Baltimore, Ireland, in 1631. Davis puts the total at 1 to 1.25 million Europeans between 1530 and 1780; critics say he extrapolated from the busiest decades. In 1915, the Ottoman government began deporting and killing its Armenian population. The U.S. Holocaust Memorial Museum puts the dead at no fewer than 664,000 and perhaps as many as 1.2 million. The method was mass killing and forced marches into the Syrian desert.
The modern version is documented in a court record and a United Nations report. In June 2016 the UN Commission of Inquiry on Syria found that ISIS was committing genocide against the Yazidis: men and boys over 12 were separated and killed, and women and girls were enslaved and repeatedly raped. In 2022 a federal court in Virginia sentenced ISIS “Beatle” El Shafee Elsheikh to life in prison for the hostage-taking and killing of Americans, including journalist James Foley, whose beheading ISIS filmed and released in August 2014. Medieval armies of every faith killed and enslaved captives, including Crusaders at Jerusalem in 1099. The record here is the Islamic part of it, and it is documented.
One claim does not hold: that Islam spread mostly by forced conversion. Historian Hugh Kennedy argues Muslims were a small ruling minority, perhaps 10% of Egypt and 20% of Iraq, which made mass forced conversion close to impossible. Conversion came over centuries, through taxation, office and social pressure. The Library of Alexandria burning in 642 is also unsupported: it rests on a story first recorded centuries later.
Open Doors, a Christian advocacy group, counted 4,849 Christians killed for their faith in its 2026 World Watch List, Nigeria accounts for 3,490 of the deaths, about 72%. That violence blends jihadist insurgency, farmer-herder conflict and banditry, and jihadist groups there also kill Muslims. Open Doors is an advocacy count, and others use different methods.
In 2015 Sweden took in about 163,000 asylum seekers under Prime Minister Stefan Löfven (Social Democrat), among the largest per-capita intakes in the EU, per its Migration Agency. Chancellor Angela Merkel (CDU) ran Germany’s open-door response. Europe’s immigration policy was made by parties across the spectrum, including center-right ones. Pew projected in 2017 that Europe’s Muslim share would rise from 4.9% to 11.2% by 2050 under medium migration.
The cost shows in the public ledgers. Denmark’s Finance Ministry put the 2018 net cost of non-Western immigrants at 31 billion kroner, of which 24 billion came from immigrants and descendants from the Middle East, North Africa, Pakistan and Turkey, per The Local. Swedish crime data show a gap too: Sveriges Radio reports foreign-born residents are about 2.5 times as likely as native Swedes to be registered as suspects. Brå says age distribution explains a major part of the excess among people with two foreign-born parents, and that its study does not explain the causes. In England, the Casey audit found ethnicity data too patchy to draw national conclusions about grooming gangs, and police are now being told to collect it.
On names: Muhammad was the top boy’s name in England and Wales in 2024, the second year running. Spellings are counted separately, so the combined total is larger. The claim that it is the top name across all of Europe is false; Noah led in more countries, per Newsweek.
On France, the record is narrower than the claims. The October 2026 unrest began as school blockades and a cost-of-living protest, per AP, France 24 and franceinfo. Trump and Vance blamed immigration; the government blames the far left. French authorities have not published arrests by religion or nationality. Seine-Saint-Denis, where it started, is about 32% immigrant, per INSEE; that is population context, not arrest data. Our full account sorts what is documented from what is alleged.
Welcome to Paris, France 2023. [video attached, 14 seconds, reposted from another account. A 2023 post, not about the October 2026 unrest; the account's description of the video: the location, date and the people shown are not independently verified]
Five more posts from the October 2026 unrest follow. They show what these accounts posted and how the story spread online. They are not findings, and none of the videos has been independently verified for place, date or the identity and religion of the people shown.
People in France voted for the leopards to eat their faces. Now, predictably, the leopards are eating their faces. [video attached; link omitted. The post is the account's opinion]
FRANCE: Ten thousand American boys are buried in France of more than 130,000 who died to liberate France. To see them surrender the country we saved to Islamic invaders is heartbreaking. [video attached; link omitted. The post is the account's opinion and characterization]
Excerpt only: "In France a migrant protestor BURNS THE FACE OF A WOMAN in the street. Using a spray can he blows fire directly into her face." [video attached; emoji omitted. The rest of the post calls for martial law and deportations. The account's description of the video: the incident, the person's migration status and the injury are not independently verified]
Another police officer lynched in France. Where the [expletive] is Macron? [video attached; one expletive and an emoji omitted. The account's description of the video; the incident is not independently verified]
Reply to @TRobinsonNewEra: "France is on fire. Nearly a thousand people have been arrested, with the focus of the storm in the neglected suburbs of the big cities, from Paris to Nantes, Lyon and Marseille. The events that began as isolated protests quickly deteriorated into a wave of violent riots, most of" [text cut off as posted; photo attached; link omitted. The account's description; not independently verified]
Poland is having ZERO riots like France because they didn't allow mass migration. A man took a vacation to Poland. He is completely shocked by what he witnesses: "I just arrived in Poland — I lived abroad for last 23 years — there are only Caucasian people here — it's so [expletive]" [text cut off as posted; video attached; link omitted. The causal claim is the account's opinion; the video and the speaker are not independently verified]
Spanish-language post, our translation: "The 'student demands' have started in Lyon. A horde of idiots shouts in ecstasy because they are setting a building on fire. France is heading straight for total anarchy so the far left can steal the next elections." [video attached; link omitted. The account's description and opinion; the location and events are not independently verified]
A popular presentation claims Muslim migration follows a two-phase plan: arrive as refugees and use welfare, then gain power and use violence. We found no historian documenting that. The first Muslim refugees, around 615, were sheltered by a Christian king who refused to return them, per sources on the migration to Abyssinia; there were no welfare programs to exploit. Muhammad’s Medina period was state-building and included raids on Meccan caravans. Neither is evidence of a modern strategy, and it is presented here as the presenter’s claim.
This section is argument, not reporting. The European record supports a case for control, not panic. Admit people at a pace the labor market, schools and housing can absorb. Vet them. Require work and language, and measure outcomes by origin the way Denmark and Sweden do, because Britain’s missing ethnicity data left a scandal unexamined for years. Enforce the law equally when a grooming ring, a riot or a recruiter for ISIS is involved. Whether a given party would repeat Europe’s choices is a question for its voting record. Europe’s were made by Social Democrats and Christian Democrats alike.
Poland is the case study for that argument. Its governments, first Law and Justice and now Prime Minister Donald Tusk (Civic Coalition), have refused EU migrant quotas, fortified the Belarus border and, since March 2025, suspended asylum claims there for up to 60 days at a time, per CGTN, Notes from Poland and Euronews. UNHCR warned the suspension conflicts with international law; the EU migration commissioner called it correct under European law. Poland is not closed: about 993,000 Ukrainians were under temporary protection in 2025, and UNHCR and Deloitte put the employment rate of working-age refugees at 69% to 78%. The lesson is selectivity: Poland chose how many arrive and from where, and its homicide rate has run roughly 0.7 to 1.3 per 100,000 in the years we found. We could not establish it as the EU’s lowest, and we found no sourced comparison tying Poland’s quiet October to its migration policy. Both its conservative and its centrist governments have held this line.
The economy gives the argument weight. Poland’s nominal GDP passed $1 trillion in 2025 (the IMF’s revised figure is about $1.04 trillion), and Bloomberg calls it Europe’s fastest-growing major economy, with real growth of roughly 3.4% to 3.7% forecast for 2026. That is not the fastest in Europe: small economies can post higher percentages, we did not compare it with every one, EU funds are part of the story, and the IMF path has Polish growth slowing to 2.5% next year. The contrast the argument draws is between admitting people sheltering from a war and admitting them without selection. Which criteria a country should select on is a policy choice for readers; the record on this page supports selecting, and it does not support any claim about what a faith’s followers intend.
Documented: the 846 raid and the Leonine Wall; Timur’s massacre at Isfahan; Barbary slave raids; the Armenian genocide; ISIS genocide against the Yazidis, found by a UN commission, and the beheadings of Americans; 4,849 Christians killed worldwide in 2025; Sweden’s 2015 intake; Denmark’s per-person cost; Muhammad as the top boy’s name in England and Wales.
Disputed or estimated: Davis’s 1–1.25 million figure; Constantinople enslavement counts; the weight of the Ottomans in Columbus’s decision; Pew’s 2050 scenarios.
Not supported by any source we found: the Alexandria burning in 642; forced conversion as the main spread of Islam; Muhammad as the top name across all of Europe; a coordinated immigrate-then-seize plan; and any link between this month’s French rioters and religion, which no published arrest data shows.
Islamic armies built empires by massacre and slavery, and ISIS repeated it in 2014. Europe’s immigration policy has a measurable bill. The record supports a case for control, and it does not support blaming the whole faith for either.
