Tribal instincts drive people to prioritize their own group (the “in-group”) while fearing or opposing other groups (the “out-group”). In modern society, this evolutionary trait deeply impacts both public health outcomes and social harmony. Deep-seated tribalism, ethnic conflict, and intense local mistrust are severely crippling efforts to contain the 2026 Ebola outbreak in the Democratic Republic of the Congo (DRC). When health teams enter a marginalized tribe’s village, residents often view them as an invading “out-group.” Rumours quickly spread that health workers are local political actors trying to poison or exterminate their ethnic group under the guise of medical treatment. Tribal and community factions have actively attacked medical infrastructure, and caused quarantined Ebola patients to flee back into their tribal communities, sparking new transmission chains.
TRIBAL INSTINCTS PERSIST
In early human history, being exiled from the tribe meant literal death. Therefore, our brains evolved to view social alignment as a matter of life or death. Tribal instincts cause people to prioritize group loyalty and social survival over objective truth. In sociology and psychology, tribalism is known as in-group favouritism and out-group hostility. To solve tribalism, we must first understand why it persists.
•The Neurobiology of Belonging: When we align with an “in-group,” our brains release oxytocin, the hormone responsible for bonding and trust, alongside dopamine, the brain’s reward chemical. Conversely, standing alone or being excluded triggers the same neural pathways associated with physical pain. In an age of hyper-polarization, modern democratic systems are increasingly paralyzed by a primal biological vulnerability of tribalism, weaponized by political machinery and social media algorithms to destroy institutional trust. When smart people give in to tribal instincts, they willingly shut down their critical thinking to defend their “team” (political party, religion, sports fandom, or corporate culture).
•Cognitive Shortcuts (Heuristics): To save mental energy, our brains use cognitive shortcuts. Sorting the world into a simple binary of “us” versus “them” is far easier than independently analysing intricate economic, legal, or agricultural policies. When globalization, rapid cultural changes, or economic uncertainty threaten our sense of security, we naturally retreat down the evolutionary ladder. We seek shelter in our most visceral, ancestral identities: our race, our religion, or our caste. Imagine walking into a sleek corporate office where young professionals are writing sophisticated artificial intelligence code and engineering the future of the digital world. But when an election arrives, many of these same individuals step into a polling booth and cast their votes based on a social operating system that is thousands of years old: caste identity.
•The Dynamic of Existential Anxiety: When these ancient impulses collide with modern systems, the results are highly destabilizing. Today, this biological vulnerability is actively exploited by two powerful forces: political machinery and social media algorithms. Modern social media platforms operate on an attention economy. To maximize ad revenue, their algorithms are engineered to keep our eyes glued to the screen. Silicon Valley designers discovered that the most potent way to trigger human engagement is to amplify moral outrage and fear, the very signals our ancestors used to detect tribal threats.
Studies show that every moral or emotional word added to an online post increases its likelihood of being shared by roughly 20%. The algorithm notes this engagement and feeds us a continuous stream of content that validates our pre-existing biases while demonizing the “out-group.” This destroys a society’s shared factual reality. The rival political faction is no longer viewed simply as fellow citizens with a different perspective, but as an existential enemy that must be crushed.
•If a politician makes a scientifically inaccurate statement, a world-renowned scientist of that party, instead of calling out the error, will publicly defend the politician, or stay silent, to avoid criticizing their own “tribe”. When tribalism captures a democracy, institutional trust dies. Independent institutions like the judiciary or civil service require strict neutrality to function. But the tribal mind demands absolute loyalty over competence. Politics transforms from a healthy debate over policy into a zero-sum war where compromise is treated as treason, leading to systemic paralysis.
IMPACT ON PUBLIC HEALTH
•Vaccine Hesitancy: Medical choices become identity markers. People reject health guidance if their political or social tribe opposes it.
•Resource Disparities: Dominant groups allocate better healthcare infrastructure, funding, and staff to their own communities.
•Stigmatization of Disease: Outbreak origins are often blamed on minority tribes. This stops people from seeking treatment due to fear.
•Distrust of Authorities: Marginalised groups’ historical mistreatment breeds deep distrust toward government health initiatives.
•Information Silos: Health misinformation spreads rapidly within echo chambers. Members trust tribal influencers over medical experts. IMPACT ON SOCIAL HARMONY
•Polarisation: Nuanced social debates collapse into an “us versus them” mentality. This makes compromise impossible.
•Erosion of Empathy: Tribalism reduces natural empathy for outsiders. It leads to indifference toward the suffering of other groups.
•Systemic Discrimination: Tribal bias influences hiring, housing, and legal systems. This creates institutional inequality.
•Social Unrest: Perceived threats from an out-group can trigger defensive aggression. This leads to protests, riots, or hate crimes.
•Institutional Decay: Public trust in media, courts, and elections plummets when these institutions are seen as tribally biased.
GLOBAL BLUEPRINTS FOR BREAKING THE CODE
Can humanity break free from this evolutionary trap and move toward consensual governance? History proves that while we cannot erase tribalism from our biology, we can successfully harness, redirect, and mitigate it through deliberate, clever institutional design.
Nations across the globe have achieved this:
•Singapore’s Forced Integration: Upon independence in 1965, Singapore was a volatile mix of Chinese, Malay, and Indian populations prone to deadly race riots. Prime Minister Lee Kuan Yew overrode this by mandating strict ethnic quotas in all public housing estates, making ethnic enclaves illegal. Neighbours were structurally forced to live, interact, and raise children alongside different “tribes,” while an unyielding system of meritocracy ensured no group received state favouritism.
•Rwanda’s Complete Reset: Following the horrific 1994 genocide driven by HutuTutsi polarization, the government completely banned the use of tribal labels in official documents and public discourse. Through the national “Ndi Umunyarwanda” (“I am Rwandan”) initiative, they systematically replaced bloody ancestral rivalries with a unified, overarching civic identity.
•Ghana’s Balanced Constitution: To prevent ethnic civil wars, Ghana’s constitution explicitly bans political parties from being formed along ethnic, regional, or religious lines. By integrating traditional tribal chiefs into a formalized, consultative constitutional body, Ghana allowed traditional pride to exist safely parallel to the modern democratic state, rather than competing against it for legislative power.
MITIGATION STRATEGIES
Psychological studies show that the only way to dissolve hostility between two rival groups is to force them to collaborate on a superordinate goal, a massive challenge that neither group can solve alone; for Karnataka and Tamil Nadu, the ultimate superordinate goal is water security. Channel primordial tribal energy into collective economic survival, rejuvenate the Cauvery river basin, build state-wide micro-irrigation networks, and secure the states against future droughts, and save lives.
•Inclusive Leadership: Leaders must use unifying language instead of divisive rhetoric. Grassroots identity politics thrives on patron-client relationships, where local political bosses maintain power by selectively routing government favours, contracts, and benefits to their specific caste vote-banks. The state can dismantle this dependency by shifting all welfare distribution to transparent, automated digital networks tied strictly to verified economic and income data.
•Shared Identity Goals: Focus communities on common threats, like climate change or economic shifts, to build cross-tribe cooperation. By shifting the focus to superordinate goals like regional water security and deploying automated, zero-bias welfare networks, societies can transition from fractured identity politics to consensual, harmonious governance.
•Media Literacy: Educate citizens to recognise confirmation bias and emotional manipulation in online spaces.
•Incentivizing Inter-Group Contact: Friction thrives on isolation. Institutional spaces must be deliberately designed to force cross-tribal collaboration.
To achieve genuine harmony and stable, consensual good governance, we must first understand that our deep-seated political divides are not just flaws in our moral character. Our tribal instincts may be deeply hardwired, but our capacity for reason, institutional design, and empathy is equally a part of our evolutionary story. We do not need to alter our DNA to achieve consensual good governance and harmony; we simply need to change the rules of the game. By embracing technocratic clarity, automating governance to remove bias, and rallying around shared human challenges, we can build a society where our institutions are stronger than our impulses. The most successful administrators do not eliminate the divide; they use clean governance, infrastructure delivery, or legal acumen to build broad social coalitions that transcend it.
The future of democracy, harmony, public health, and wealth lies in our ability to outgrow the ancient tribes we left behind, and finally build a nation of citizens.
*Dr. P.S.Venkatesh Rao is a Consultant Surgeon, Former Faculty CMC (Vellore), AIIMS (New Delhi), and a polymath in Bengaluru, drpsvrao.com
