In 1930, Spanish republican forces signed up to the Pact of San Sebastián, leading to the Second Spanish Republic. Unrest and repression did not stop with the new political regime, and large-scale industrial action was called several times by the growing anarchist, communist and socialist unions. The 1936 military coup was initially defeated by the resistance, led by the Basque Nationalists, anarchists and communists, but later that same year the province fell to Spanish Nationalist forces during the Northern Campaign. The occupation proved disastrous for the city's residents. Between 1936 and 1943, 485 people were executed as a result of show trials by the Spanish Nationalists (Requetés and Falangists). It has been estimated that extrajudicial executions ("paseos") by the occupying military forces accounted for over 600 murders in the area during the first months of occupation. Many children were evacuated to temporary safety in Bilbao, with the city's population falling by an estimated 40,000 to 50,000 inhabitants.