The other opposition to the deal comes from the Provisional IRA and its political deputies. They murder fellow Irishmen in the name of Irish unity. They murder members of the UDR and ruC – Irish compatriots. These members see themselves as the protectors of their heritage, but the Provisional IRA brutally murders members of the UDR and RUC on behalf of the Irish People`s Association, a legacy with which we must unite if we ever want to unite Ireland. The agreement was largely rejected by unionists because it allowed the Republic of Ireland to play a role for the first time in the Northern Ireland government and because they had been excluded from the negotiations on the agreement. The Ulster Unionist Party (UUP) and the Democratic Unionist Party (DUP) led the campaign against the deal, including mass rallies, strikes, civil disobedience and the mass resignation of all Unionist MPs from the British House of Commons. The DUP and UUP jointly organised 400,000 signatures in a petition against the agreement. Northern Ireland Minister Tom King was attacked by Protestants on 20 November in Belfast.  On November 23, 1985, a mass demonstration against the agreement took place outside Belfast City Hall, which Irish historian Dr Jonathan Bardon said: “Nothing like this has been seen since 1912.”  Estimates of the number of people there vary: the Irish Times claimed that 35,000 people were present;  The News of the World, the Sunday Times and the Sunday Express claimed 100,000;  The professor of politics at ulster University, Arthur Aughey, claimed that there were more than 200,000 people;  and the organizers of the meeting said that 500,000 people participated.  Other developments that followed the agreement were judicial reforms, the beginnings of police reform, the lifting of restrictions on the public use of the Irish, and the appointment of people of nationalist origin to public institutions where they were severely underrepresented.
These broader reforms are expected after the 1998 Belfast Agreement. The agreement was adopted by Dáil Éireann by 88 votes to 75 and by Seanad Éireann by 37 votes to 16.   Fianna Fáil, the main opposition party in Ireland, also rejected the deal. Fianna Fáil leader Charles Haughey claimed the agreement was contrary to Articles 2 and 3 of the Irish Constitution because it formally recognised British jurisdiction in Northern Ireland. It was also rejected by independent Republican TDs Neil Blaney and Tony Gregory, blaney calling the deal a “fraudster`s job.”