An artist’s depiction of the Easter Uprising.
From Wikipedia: n 1916 the Easter Rising organised by the Irish Republican Brotherhood was launched in Dublin. The Rising was suppressed after six days, and most of its leaders were executed by the British. This was a turning point in Irish history, leading to the end of British rule in most of Ireland. From 1919-1921 the Irish Republican Army (IRA) was organized as a guerilla army, led by Michael Collins and fought against British forces. During theAnglo-Irish War (or War of Irish Independence) the British sent paramilitary police, the “Black and Tans” and the Auxiliary Division, to help the British army and Royal Irish Constabulary. These groups committed atrocities which included killing captured POWs and Irish civilians viewed as being sympathetic to the IRA. The most infamous of all their actions was the burning of half the city of Cork in 1920 and the Bloody Sunday massacre of 1920. These atrocities, together with the popularity of the republican ideal, and British repression of republican political expression, led to widespread support across Ireland for the Irish rebels.