State Protection Service Day is observed in Poland every June 12. This official professional holiday was established by the Sejm in 2001 and was renamed in 2018 following the transition from the Government Protection Bureau to the State Protection Service (Służba Ochrony Państwa, SOP). The SOP functions similarly to the United States Secret Service, focusing on combating terrorism and ensuring the security of the Polish government. Its subjects of protection include high-ranking officials such as the President, Prime Minister, and foreign dignitaries. The origins of this observance date back to June 12, 1924, when a special Protection Brigade was created after the assassination of President Gabriel Narutowicz. The main celebrations typically take place in the courtyard of the Royal Castle in Warsaw, where newly appointed SOP officers take an oath of allegiance.