International audienceThis paper aims at exploring two tragic days during which political murders were committed in Ireland. On 6 May 1882 two senior British officials were assassinated in Phoenix Park, Dublin, by members of a small republican secret society. About forty years later, on the morning of 21 November 1920, an IRA’s commando executed twelve officers suspected of belonging to British intelligence.In the afternoon – a reply to the attack by another attack ? – police forces fired the audience attending a Gaelic football match at Croke Park (Dublin) ; fourteen people died in the shooting.In this article, events are considered over the long run, including their motives and actors before the murders as well as their appropriations and...