"Bella Ciao" is an Italian folk song that originated in the late 19th century among the mondina workers in the rice paddies of Northern Italy. It gained international fame during World War II when it was adopted as an anthem of the Italian resistance movement against Nazi Germany and Fascist Italy. The song's powerful message of resistance and freedom has made it a global protest anthem, experiencing renewed popularity through its feature in the Netflix series "Money Heist" (La Casa de Papel).