The early decades of Islamic history were marked by rapid expansion, political transformation, and internal conflict. Among the most consequential groups to emerge during this formative period were the Kharijites (al-Khārija)—a radical sect whose political theology, violent tactics, and uncompromising worldview would shape Sunni and Shia attitudes toward extremism for centuries. Many historians, scholars of religion, and analysts of political violence describe the Kharijites as the first identifiable terrorist movement within Islamic civilization, not because of anachronistic comparisons, but because they represent one of the earliest organized groups in world history to fuse ideology, political rebellion, and targeted violence into a coherent program.
To understand why the Kharijites occupy this place in history, one must examine their origins, beliefs, methods, and impact. Their story is not merely a tale of ancient conflicts—it is a study in how absolutist thinking and moral certitude can drive political movements toward violent extremism.
Origins: The Turmoil of the First Fitna
The Kharijite movement arose during the First Fitna (656–661 CE), the civil war that erupted after the assassination of the third caliph, Uthman ibn Affan. This turbulent period saw the Muslim community split over leadership, justice, and authority. When Uthman was killed, Ali ibn Abi Talib became the fourth caliph, but his legitimacy was contested by powerful figures such as Mu‘awiya ibn Abi Sufyan, the governor of Syria and a relative of Uthman who demanded retribution.
The decisive moment that birthed the Kharijites occurred during the Battle of Siffin in 657 CE. When the fighting reached a stalemate, Mu‘awiya’s troops raised Qur’ans on their spears, calling for arbitration based on scripture. Ali agreed to arbitration, a decision that enraged a faction within his own army who believed that judgment belonged to God alone and that accepting human arbitration was sinful.
This dissenting group “withdrew” (kharajū) from Ali’s camp—hence the name Kharijites, meaning “those who seceded.” Initially a political protest, their secession quickly transformed into a radical theological revolt.
The Kharijite Ideology: Rigidity as Righteousness
What distinguished the Kharijites was not simply their secession, but the extreme ideological system they constructed to justify rebellion. At the heart of their worldview lay several core principles:
1. Takfīr: Declaring Muslims as Apostates
The Kharijites believed that committing a grave sin, or making a political decision they deemed illegitimate, constituted kufr (disbelief). They consequently declared Ali, Mu‘awiya, and their followers as apostates. This doctrine of takfīr—excommunication—became the theological foundation for violence against fellow Muslims.
Modern extremist groups would later adopt similar logic, which is why the Kharijites are often cited as historical precedents for contemporary jihadist movements.
2. Absolute Moral Purity
To the Kharijites, faith was not a spectrum but a binary: one was either fully righteous or completely misguided. Compromise, pragmatism, delay of judgment, or political negotiation were equated with betrayal of God’s will.
3. Rejection of Legitimate Authority
The Kharijites believed that any morally flawed leader must be violently opposed. Caliphs, governors, judges, and even civilian officials who did not adhere to Kharijite principles were considered illegitimate and thus fair targets.
4. Egalitarian but Utopian Leadership
They insisted that any righteous Muslim—even a non-Arab or former slave—could be leader, but only if he remained morally perfect. A single error justified immediate removal, often through assassination.
This ideological rigidity made sustained political organization almost impossible, fueling perpetual fragmentation, splintering, and cycles of violence.
Tactics: Why the Kharijites Are Considered Early Terrorists
The Kharijites did more than preach; they acted. Their methods were unprecedented in the early Muslim community and resembled what modern scholars call terrorist tactics—violent acts designed to intimidate, destabilize governance, and impose ideological conformity.
1. Targeted Assassinations
In 661 CE, a Kharijite operative named ʿAbd al-Rahmān ibn Muljam assassinated Ali in Kufa. The plan was part of a coordinated plot to kill Mu‘awiya and Amr ibn al-ʿAs on the same night, aiming to decapitate all major Muslim leadership simultaneously. Only the attack on Ali succeeded, but it demonstrated a strategic embrace of political assassination.
2. Attacks on Civilians
Kharijite groups attacked Muslims who did not share their ideology, including merchants on roads, travelers, farmers, and even women and children. One of the most notorious incidents involved the murder of a pregnant woman, whom they considered an enemy for not supporting their cause—a story cited by Sunni and Shia scholars to illustrate Kharijite extremism.
3. Guerrilla Warfare and Insurgency
Operating in deserts and remote regions, Kharijites mounted surprise attacks, ambushes, and hit-and-run raids on state forces. Their decentralized structure made them difficult to suppress.
4. Ideological Propaganda
They aggressively preached in marketplaces, mosques, and rural villages to recruit supporters, appealing to disenfranchised tribes and individuals who felt marginalized by the political elites in Kufa, Basra, and Damascus.
These methods—assassination, violence against civilians, and a fusion of ideology with insurgency—form the basis for describing the Kharijites as the first terrorist movement in Islamic history.
Internal Divisions: Extremism Consumes Itself
Ironically, the Kharijites’ uncompromising ideology ensured they could not remain united. They quickly fragmented into factions, including:
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The Azariqa — the most extreme, advocating indiscriminate violence and excommunication of all dissenters.
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The Najdat — slightly less radical but still militant.
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The Ibāḍiyya — a moderate faction that survived into modern times and rejected violence.
The Azariqa, led by Nafi ibn al-Azraq, became infamous for their brutality, declaring entire communities apostate and killing civilians on a mass scale. Their extremism alienated even potential sympathizers.
The Ibāḍis, in contrast, moved toward pragmatism and coexistence, eventually establishing peaceful communities in Oman, East Africa, and parts of North Africa. Their survival shows that not all Kharijites embraced terror, though the militant factions dominated early history.
The State Response: Suppression and Containment
Successive caliphates—Ali’s supporters, the Umayyads, and even the Abbasids—struggled to eradicate the Kharijite threat. Their mobility, desert bases, and ideological zeal gave them resilience. Key state responses included:
1. Military Campaigns
Mu‘awiya’s general Ziyad ibn Abihi and his successor al-Hajjaj ibn Yusuf launched brutal campaigns to pacify Kharijite insurgencies in Iraq and Persia.
2. Intelligence Networks
Governors established surveillance systems to detect Kharijite cells, an early form of counter-insurgency intelligence.
3. Co-optation
Some moderate factions were granted autonomy or allowed to integrate into existing communities if they renounced violence.
Despite periodic defeats, Kharijite uprisings continued for nearly a century, demonstrating how entrenched ideological extremism can survive even against powerful states.
Theological and Historical Legacy
The impact of the Kharijites on Islamic thought has been profound and enduring.
1. A Symbol of Extremism
In Sunni and Shia tradition alike, the term “Kharijite” became synonymous with:
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excessive zeal
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religious intolerance
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rebellion against legitimate authority
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excommunication of Muslims
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violent puritanism
Classical scholars such as Al-Ghazali, Ibn Taymiyyah, and Al-Ash‘ari cited the Kharijites as a cautionary example of how literalism and moral absolutism could distort religion.
2. Influence on Later Extremist Movements
While modern extremist groups differ historically, their use of takfīr, rejection of established authority, and willingness to kill Muslims are often compared to Kharijite patterns. Thus, the term “neo-Kharijite” is sometimes applied in contemporary discourse.
3. Lessons on Political Violence
The Kharijites illustrate how political grievances, tribal tensions, and ideological rigidity can combine to produce violent extremism. Their story provides an early case study in the dynamics of radicalization.
Why the Kharijites Are Called the First Muslim Terrorists
The term “terrorist” is modern, but historians apply it cautiously to the Kharijites for several reasons:
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They used violence intentionally to instill fear—not only against armies but against civilians.
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They targeted political leaders for assassination, including Ali.
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They justified killing non-combatants for ideological reasons, a major departure from early Islamic norms.
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Their actions aimed to destabilize the established political order.
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Their ideology framed violence as a sacred duty, a hallmark of religious terrorism.
Given these characteristics, the Kharijites represent one of the earliest identifiable extremist movements that intentionally fused religious ideology with political violence.
Conclusion: Historical Memory and Modern Relevance
The Kharijites remain one of the most significant and controversial groups in Islamic history. They were the first to fracture the early Muslim community through ideological excommunication, targeted violence, and rebellion against established authority. Their legacy is a cautionary tale about how absolutism, moral self-righteousness, and ideological inflexibility can transform political dissent into violent extremism.
While the historical context of the Kharijites is unique to the 7th century, the mechanisms that produced them—political grievance, theological rigidity, and charismatic militancy—are universal features of extremist movements across cultures and eras. Understanding their story helps contextualize not only early Islamic history but the broader phenomenon of radicalization.
In this sense, the Kharijites stand not merely as the “first Muslim terrorists” but as an early chapter in the global history of ideological extremism. Their rise and fall remind us that violence born of certainty, division, and uncompromising dogma has been a recurring challenge in human societies—and that the struggle against extremism is as old as civilization itself.





