Robert Hamill was an Irish Catholic civilian who was beaten to death by a loyalist mob in Portadown, County Armagh, Northern Ireland. Hamill and his friends were attacked on 27 April 1997 on the town's main street. It has been claimed that the local Royal Ulster Constabulary (RUC), parked a short distance away, did nothing to stop the attack. At the time of the murder, tension between loyalists (mainly Protestants) and Irish nationalists (mainly Catholics) was high, mostly due to the ongoing Drumcree parade dispute.
Hamill and his friends were attacked by a group of loyalists while walking home from St. Patrick's dance hall at about 1.30 a.m on 27 April 1997. After walking along Market Street from the dance hall, they came to the intersection of Market and Thomas Streets in Portadown, where they were attacked. Hamill and his friend, Gregory Girvan, were kicked by the crowd while their attackers shouted abuse at them and Robert Hamill was knocked unconscious almost immediately. Girvan's wife and sister, Joanne and Siobhán Garvin, respectively, called for help from four RUC officers sitting in a Land Rover about twenty feet away from the attack, but they did not intervene to stop the attack. The assault lasted about ten minutes, leaving both men unconscious. Just before the ambulance arrived, one of the RUC men got out of the Land Rover and told Garvin to put Robert into the recovery position.
Robert Hamill never regained consciousness and died of his injuries eleven days later on 8 May 1997, aged 25. The cause of his death was recorded as "Diffuse Brain Injury associated with Fracture of Skull due to Blows to the Head". Six people were arrested after Robert Hamill's death, but only one was eventually tried for his murder.
Paul R. Hobson was charged with murder, but found not guilty, though he was found guilty of unlawful fighting and causing an affray and sentenced to four years' imprisonment. The case under which Hobson was prosecuted is questionable as the main witness, Constable Atkinson of the then RUC, was at one stage a suspect in conspiracy to cause murder in the same case. His solicitor also did not use crucial evidence in the case to cross-examine witnesses. Mr. Justice McCollum said during his verdict that the killing was a sectarian act, with a very large number of loyalists attacking a small number of nationalists, but that he could not decide whether the RUC men had left their Land Rover or not during the attack.