La Lengua de las Mariposas (1999) Una pelicula maravillosa!
Wiki: In a Galician town, a young boy, Moncho, goes to school for the first time and is taught by Don Gregorio about life and literature. At first Moncho is very scared that the teachers will hit him, as that was the norm then. But, as he jubilantly proclaims after his first day at school, Don Gregorio doesn’t hit. Don Gregorio is not like any other teacher, and he builds a special relationship with Moncho, and teaches him to love learning.
When fascists take control of the town, they round up known Republicans, including Don Gregorio. Moncho’s father is also a Republican, and his family fears that he too will be taken away in the purge if the fascists discover his political leanings. In order to protect themselves, the family goes to the town square to jeer the captured Republicans as they are paraded out of the court house and boarded onto a truck. The film ends with Moncho, despite his continued great affection for his friend and teacher, yelling hateful things and throwing rocks at Don Gregorio and the other Republicans as the truck carries them away, though the last thing Moncho yells are the words for the tongue of a butterfly, espiritrompa (literally “spirotube” or proboscis, in Spanish), a favorite word taught to him by Don Gregorio in an attempt to let his dear friend know that he does not truly mean the words he is yelling.