Former President Luiz Inacio Lula da Silva, freshly out of jail, vowed to fight Brazil’s far-right government and the forces he says unjustly incarcerated him, saying he would make “their lives hell,” The Associated Press reported.

“They don’t know what it is to face a 74-year-old passionate man,” da Silva told cheering supporters late Friday.

He governed Brazil from 2003 to 2010, and became one of the world’s most popular politicians before being ensnared in corruption scandals.

Da Silva denies all accusations against him.