Editing PIDE (section)

===Background===
During the [[Portuguese First Republic]] and the following ''[[Ditadura Nacional]]'' regimes, the police services were reorganized several times, with the remote ancestors of PIDE appearing. 

In 1918, the police services were organized as an [[umbrella organization]] named Civic Police, which started to include two agencies that were the remote ancestors of the PIDE: the Preventive Police and the Emigration Police. The first agency was a secret police responsible for the State security. The Preventive Police would become the State Security Police in 1919, the Social Defense Police in April 1919, and the Preventive and State Security Police in October 1919. The Emigration Police was an agency responsible for the border and migration control, with a special focus in the fight against illegal emigration.

After the [[28 May 1926 coup d'état]] and the establishment of the military ''Ditadura Nacional'', the Preventive and State Security Police was disbanded. However, soon after, two similar agencies were created, the Lisbon Information Police and the Porto Information Police, respectively under the control of the civil governor of Lisbon and the civil governor of Porto. In 1928, the two agencies were merged into a single Information Police under the direct control of the Minister of the Interior. In the same year, the Portuguese International Police was created as a section of the Information Police, succeeding the former Emigration Police. In 1931, the Information Police was disbanded and the Portuguese International Police became autonomous, under the direct control of the Minister of the Interior. In 1932, the Political and Social Surveillance Section of the Portuguese International Police was created, with the same role of the former Information Police. 

With Salazar in office as prime minister, the Political and Social Surveillance Section became autonomous in January 1933, as the Political and Social Surveillance Police. The Portuguese International Police and the Political and Social Surveillance Police would merge in August 1933, as the PVDE.