11 August 1984,
CCOO calls on Telefónica's workers not to help police paint phones in Gipuzkoa. The union called in the light of the increase in cases of Police telephone hearings in this country. Many communications company workers and technicians refused to install them.
Source:
Sabino Ormazabal, 500 nonviolent actions. Another way to tell the story (Bidea Objective Group).