After the Irish Civil War the 1923 Irish hunger strikes were undertaken by thousands of Irish republican prisoners protesting the continuation of their internment without trial.

The Irish Civil War was a conflict that followed the Irish War of Independence and accompanied the establishment of the Irish Free State, an entity independent from the United Kingdom but within the British Empire.

In October 1923 mass hunger strikes were undertaken by Irish republican prisoners protesting the continuation of their internment without trial. The Irish Civil War had ended six months earlier yet the newly formed Provisional Government of the Irish Free State was slow in releasing the thousands of Irish republican prisoners opposed to the Anglo-Irish Treaty.

Irish republicanism is the political movement for an Irish republic, void of any British rule. Throughout its centuries of existence, it has encompassed various tactics and identities, simultaneously elective and militant and has been both widely supported and iconoclastic.

Internment is the imprisonment of people, commonly in large groups, without charges or intent to file charges. The term is especially used for the confinement "of enemy citizens in wartime or of terrorism suspects". Thus, while it can simply mean imprisonment, it tends to refer to preventive confinement rather than confinement after having been convicted of some crime. Use of these terms is subject to debate and political sensitivities. The word internment is also occasionally used to describe a neutral country's practice of detaining belligerent armed forces and equipment on its territory during times of war, under the Hague Convention of 1907.