What group initially known as Official Sinn Féin, featured activist Des O'Hagan?
Des O'Hagan: Des O'Hagan (29 March 1934 - 5 May 2015) was a prominent member of the Workers' Party of Ireland and was a founding member of the Northern Ireland Civil Rights Association. Workers' Party of Ireland: The Workers' Party (Irish: "Páirtí na nOibrithe" ), originally known as Official Sinn Féin, is a Marxist–Leninist political party active throughout Ireland.
Workers' Party of Ireland