Harry Diamond was a socialist, Irish nationalist and was the Irish Labour Party MP for Falls sitting in the Northern Ireland Parliament, later he was a leading figure in, and then leader of, the Republican Labour Party. The color red and particularly the red flag are traditional symbols of Socialism. ... An Irish nationalist is generally one who seeks (greater) independence of Ireland from Great Britain, including since 1921 the goal of a United Ireland. ... The Labour Party (Irish: Páirti an Lucht Oibre) is the third largest political party in the Republic of Ireland. ... The Falls Road is the main road through West Belfast; from Divis Street in the city centre to Andersonstown in the suburbs. ... The Parliament of Northern Ireland was the home rule legislature created under the Government of Ireland Act 1920, which existed from June 7, 1921 to March 30, 1972, when it was suspended. ... The Republican Labour Party was a political party in Northern Ireland. ...

Diamond was first elected in the 1940s at a time when the Irish Labour Party was in government in the Republic of Ireland. He left the Labour Party because of the (indirect) consequences of that government's travails over the Mother and Child Scheme and the demand of the majority of Irish Labour members in Belfast that the party should challenge the entrenched power of the Catholic Church in Ireland. Diamond opposed these demands and left the party to fight a city council by-election against a protestant supporter of reform. Noel Browne (20 December 1915-21 May 1997) was an Irish politician and doctor. ... Belfast (Béal Feirste in Irish) is the largest city in and capital of both Northern Ireland and Ulster, and the second largest city on the island of Ireland. ... The Roman Catholic Church, most often spoken of simply as the Catholic Church, is the largest Christian church, with over one billion members. ... Protestantism is a general grouping of denominations within Christianity. ...

Diamond lost the byelection but viciously attacked the party for being in the grip of Communism, so effectively destroying it as a political force. This article is about communism as a form of society built around a gift economy, as an ideology that advocates that form of society, and as a popular movement. ...

Diamond saw a strong challenge to his posotion from the resurgent Northern Ireland Labour Party in the late 1960s, and was criticised for being inattentive to his constituents needs. Paddy Devlin of the NILP (and a former supporter of the reformists in the Belfast branch of the Irish Labour Party) defeated him in the Northern Ireland general election of 24 February 1969. The Northern Ireland Labour Party was a political party which operated from 1924 until the 1980s. ... A general election is an election in which all members of a given political body are up for election. ... February 24 is the 55th day of the year in the Gregorian Calendar. ... 1969 was a common year starting on Wednesday (the link is to a full 1969 calendar). ...

Several years earlier Diamond had formed the Republican Labour Party with Gerry Fitt. When, in 1970, Fitt left to found the broader-based Social Democratic and Labour Party the SLP went into terminal decline. Gerrard Gerry Fitt, Baron Fitt (born 9 April 1926), is a former leader of the Social Democratic and Labour Party and a socialist and republican politician. ... 1970 was a common year starting on Thursday. ... The Social Democratic and Labour Party (SDLP — Irish: Páirtí Sóisialta Daonlathach an Lucht Oibre) is the smaller of the two major nationalist parties in Northern Ireland. ...