qnli question: What is the Policia de Seguranca Publica - PSP (Public Security Police)? sentence: Portugal's main police organizations are the Guarda Nacional Republicana – GNR (National Republican Guard), a gendarmerie; the Polícia de Segurança Pública – PSP (Public Security Police), a civilian police force who work in urban areas; and the Polícia Judiciária – PJ (Judicial Police), a highly specialized criminal investigation police that is overseen by the Public Ministry.