The focus on Human Rights Day and the Universal Declaration of Human Rights (UDHR) recalls a project Celtic League were very committed to in the mid 1990s which involved with others internationally the framing the ‘Universal Declaration of Linguistic Rights’ and having it incorporated with the UDHR.
The project involved a broad range of groups globally and the Celtic League became signatories at a meeting in Barcelona in June 1996 which is described in the Convenors report to the Celtic League AGM held in Brittany in that year on page 20 of Carn 95 at this link:
The endeavour involved the then Convenor Cathal O Luain and AGS at the time Mark Kermode in attending several meetings in Barcelona.
Despite the support of several prominent International figures such as . Nelson Mandela, Buthelezi Mangosuthu Gatsha, Ronald Harwood, Homero Aridjis, Noam Chomsky, José Ramos-Horta, Dalai Lama, Dr. M. Aram, Desmond Tutu, László Tőkés, Ricardo María Carles Gordó, Adolfo Pérez Esquivel, José Carreras, Seamus Heaney, Ngũgĩ wa Thiong’o, Shimon Peres, Judit Mascó, Peter Gabriel and Joan Oró and the support of a number of UN member States the report was not adopted by UNESCO or incorporated into the UDHR.
There is a brief background to the UDLR here:
Bernard Moffatt, Assistant General Secretary Celtic League (10 December 2019)