Enzo Jannacci and Dario Fo's Ho visto un re [wikipedia]
Ho visto un re is a satire against power. The narrative voice is that of some peasants who sing and point out that all powerful (the King, the Emperor, the Bishop, the Cardinal, the rich people) as they are touched their interests, even minimally, they start to cry. In contrast, the peasants, even when they are deprived of essential things, have to laugh because their «cry hurt the king it hurts the rich people and the Cardinal, they become sad if we cry».
It was born as a sham traditional folk song, and very quickly became a real one.