What is Tiradentes Day Holiday ?

Joaquim José da Silva Xavier ([ʒwaˈkĩ ʒuˈzɛ dɐ ˈsiwvɐ ʃɐviˈɛʁ]), known as Tiradentes (August 16, 1746–-April 21, 1792, IPA: [tʃiɾɐˈdẽtʃis]), was a leading member of the Brazilian revolutionary movement known as the Inconfidência Mineira whose aim was full independence from the Portuguese colonial power and to create a Brazilian republic. When the plan was discovered, Tiradentes was arrested, tried and publicly hanged. Since the 19th century he has been considered a national hero of Brazil and patron of the Polícia Militar de Minas Gerais (Minas Gerais Military Police).