Seán Gabriel McManus (born 1944 in County Fermanagh, Northern Ireland) is an American human rights, justice, peace campaigner and Roman Catholic priest.
In August 1971, he was arrested in Enniskillen, County Fermanagh, Northern Ireland, after a demonstration, because he intervened to stop the police beating up a young boy.
In 1974, he founded the Irish National Caucus (INC), a group[6] formed to lobby the United States Congress on behalf of the cause of justice and peace in Northern Ireland.
[11] The MacBride Principles – a corporate code of conduct for American companies doing business in Northern Ireland – was launched by the Irish National Caucus on November 4, 1984.
The MacBride Principles both symbolized and effectuated the Caucus’ major campaign to stop the U.S. dollars subsidizing anti-Catholic discrimination in Northern Ireland.