Mass immigration from other parts of Spain, spurred by growing industrial production, greatly increased the population, initiating rapid and chaotic urban development on the outskirts of the city (Altza, Intxaurrondo, Herrera, Bidebieta), yet social, cultural and political injustices followed, setting the scene for popular dissatisfaction. A general climate of protest and street demonstrations followed, driven by Basque nationalists (especially the armed separatist organisation ETA) and various underground unions, triggering the first state of emergency in Gipuzkoa in 1968. Several more were imposed by the Francoist authorities in the period immediately preceding Franco's death in 1975.