Complex sentence: The attacks occurred during the Ulster Workers'Council Strike which was a general strike called in protest by loyalists against the Sunningdale Agreement's proposed power-sharing between Unionists and Nationalists, and an increased role of the Republic of Ireland in the governance of Northern Ireland.
Split into simpler sentences: The attacks occurred during the Ulster Workers' Council Strike, which was a general strike called by loyalists in Northern Ireland to protest against the Sunningdale Agreement. The Agreement proposed power-sharing between unionists and nationalists, and a greater role for the Republic of Ireland in the governance of Northern Ireland.