1988 Spanish general strike
The 1988 Spanish general strike, known locally as 14-D (shortened form of 14 Diciembre), was a general strike in Spain that took place on December 14, 1988. It was called by the two main trade unions: CCOO and Unión General de Trabajadores (UGT).
Source: Wikipedia — 1988 Spanish general strike (CC BY-SA 4.0)