Brazil star Dani Alves has hit out against critics of the national team, as Dunga's men prepare for a vital World Cup qualifier against Peru.
Following the 1-1 draw on Friday against Argentina, the Selecao have picked up just four of nine available points in their campaign thus far.
But Alves has now accused certain Brazilian observers of being hypocrites when it comes to talking about the team.
"These days people speak as if it were easy to play football. Even people who used to play, they know how hard it is to make a pass or score a goal," the Barcelona man told a press conference.
"And now they tell it like it's easy. They screwed up in the same ways as people do now."