Committee met at Stormont Castle and decided that On 10 September the British Army started construction of the first "peace wall". It was the first of many such walls across Northern Ireland, and still stands today. After the riots, the 'Hunt Committee' was set up to examine the RUC. It published its report on 12 October, recommending that the RUC become an unarmed force and the B Specials be disbanded. That night, loyalists took to the streets of Belfast in protest at the report. During violence in the Shankill, UVF members shot dead RUC officer Victor Arbuckle. He was the first RUC officer to be killed during the Troubles. In October and December 1969, the UVF carried out a number of small bombings in the Republic of Ireland. 1970s Violence peaks and Stormont collapses Despite the British government's attempt to do "nothing that would suggest partiality to one section of the community" and the improvement of the relationship between the Army and the local population following the Army assistance with flood relief in August 1970, the Falls Curfew and a situation that was described at the time as "an inflamed sectarian one, which is being deliberately exploited by the IRA and other extremists" meant that relations between the Catholic population and the British Army rapidly deteriorated. From 1970 through 1972 an explosion of political violence occurred in Northern Ireland. The deadliest attack in the early 70s was the McGurk's Bar bombing by the UVF in 1971. The violence peaked in 1972, when nearly 500 people, just over half of them civilians, were killed, the worst year in the entire conflict. By the end of 1971, 29 barricades were in place in Derry, blocking access to what was known as Free Derry; 16 of these were impassable even to the British Army's one-ton armoured vehicles. Many of the nationalist or republican "no-go areas" were controlled by one of the two factions of the Irish Republican Army—the Provisional IRA and Official IRA. There are several reasons offered for why violence escalated in these years. Unionists say the main reason was the formation of the Provisional IRA and Official IRA, particularly the former. These two groups were formed when the IRA split into the 'Provisional' and 'Official' factions. While the older IRA had embraced non-violent civil agitation, the new Provisional IRA was determined to wage "armed struggle" against British rule in Northern Ireland.