Los desafíos (1969) by José Luis Egea, Víctor Erice and Claudio Guerín

Three different episodes with the common nexus of expressing how a situation that seems normal ends up in an outbreak of violence: a father, actor of renown and owner of a luxurious mansion, who fears losing his daughter to an American officer; an adulterous husband, owner of an extensive estate where he breeds fighting bulls, who feels cheated to find that his wife has also been unfaithful to him; a young American traveler across Spanish lands who decides that his trip and that of his companions should not continue.