"Bella Ciao" is an Italian folk song of unclear origins. In the 20th century, the most popular version of the song was created. It was dedicated to the Italian partisans of the Second World War, who fought against Nazi Germany and Fascist Italy to liberate their country from authoritarianism.
The now song is used by resistance movements worldwide. It regained popularity in the late 2010s, as it appeared in a Spanish TV show called "La casa de papel".