Fourth Republic — communal wars, lead poisoning, EndSARS (1996–present) — Ebonyi State

1996–2024 — the Ezza-Ezillo war — the longest-running intra-Igbo communal conflict of the Fourth Republic, over Amaezu/Ezillo land tenure; cycles of killings recorded in 1995, 1997, 2002, 2008 (when 200+ killed in three days and Governor Martin Elechi declared a curfew), 2010, 2012, 2017, 2020, 2023. Cumulative death toll: 1,500–2,000; cumulative displacement: 150,000+. Pattern: communal conflict / land.
1999–2010 — Ebonyi-Benue boundary clashes (Ngbo / Agila axis) — Effium and Ngbo (Ohaukwu, Ebonyi) v. Agila (Ado, Benue) over salt-spring and farmland; major incidents 2002, 2005, 2014, 2017, 2021.
1999–present — Ebonyi-Cross River boundary war (Yakurr / Izzi-Ezza axis) — Ebom-Ebijakara, Ezza-Yakurr land disputes; August 2014 massacre at Korpen left 50+ dead; recurring through 2020.
2005, 2010, 2017 — Ikwo-Ezza land wars — Ezza South v. Ikwo over the Iyiokwu river bank; documented deaths in each cycle.
★ 2010–2012 — MSF lead-poisoning crisis (Enyigba, Ameka, Mkpuma-Akpatakpa) — Médecins Sans Frontières and the Federal Ministry of Health document child blood-lead levels at 5–10× WHO action thresholds, paralleling (and partially obscured by) the more famous Zamfara crisis. Pattern: state neglect / environmental harm.Northern Abandonment Cycle
2010 Pb-Zn pit collapse at Enyigba — 14 artisanal miners killed in a single collapse.
2011 Effium intra-communal clash — Effium v. Agila farmer-killings, 20+ dead.
2014–2024 — herder-farmer clashes in Ohaukwu, Ishielu, Ezza North, Ebonyi LGA — Fulani-pastoralist attacks on Izzi and Ezza farming villages; major incidents April 2016 (Ngbo, 40+ dead), 2018, 2021 (Effium, 70+ dead), 2023 (Ishielu).Climate-Conflict Escalator
2016 — Operation *Python Dance* / IPOB clampdown — Nigerian Army operations through Ebonyi en route to Abia; arrests of IPOB activists in Abakaliki and Afikpo.Grievance-to-Insurgency Pipeline
#EndSARS Abakaliki, 20–22 Oct 2020 — protests at the State Assembly and Centenary City; relatively peaceful by Lagos/Rivers standards; c. 2 confirmed dead statewide; Ebonyi Judicial Panel sits 2020–2021.Impunity Loop
2020–2024 — Unknown Gunmen attacks — the "Eastern Security Network" / "Unknown Gunmen" attacks attributed to IPOB-affiliated splinters strike INEC offices (Izzi, Ezza South), police stations (Onueke, Edda) and Monday "sit-at-home" enforcement; cumulative deaths in Ebonyi 100+.Grievance-to-Insurgency Pipeline
2022 — Ebonyi flooding — record Niger-River backflow into the Effium plain; 30,000+ displaced.
2023 election violence in Effium and Ohaukwu — pre- and post-election killings during the gubernatorial contest won by Francis Nwifuru (APC).Election Crisis Pattern
2024 — Ezza-Effium clashes — fresh outbreak January 2024; military deployment of 14 Brigade extended.