What caused the Troubles in Northern Ireland?

The Troubles were a period of violent sectarian conflict in Northern Ireland from approximately 1968 to 1998, rooted in deep-seated divisions between Protestant unionists, who sought to remain part of the United Kingdom, and Roman Catholic nationalists, who desired a united Ireland.1

The conflict was ignited by the erosion of regional stability in the mid-1960s. A generation of well-educated Catholics, facing systemic discrimination in areas like housing and political representation, began demanding equitable treatment through a civil rights movement. These demands met with fervent resistance from those who insisted on maintaining the status quo, creating a volatile environment.32

Tensions escalated into widespread violence following confrontations at political marches, such as the 1968 protest in Derry and the 1969 Battle of Bogside. As communal violence overwhelmed the Royal Ulster Constabulary, the British army was deployed to restore order. The subsequent emergence of paramilitary groups, including the Irish Republican Army and loyalist brigades, transformed the unrest into a prolonged, low-intensity conflict characterized by bombings, shootings, and political instability.321