Millions of Brazilians are publicly protesting for the president's impeachment.

This huge turnout, not only in the big cities but also in the countryside, in the North and Northeast, denotes the general climate of popular discontent.

It is an untenable situation, an insult to the institutions -- Federal Police, MPF, House of Representatives -- and one that jeopardizes the fight against corruption. Resign, Cunha.

Brazil was heading into the semifinals of world development as an odds-on favorite. How did the country go from world-class performer to global embarrassment in what seems like the blink of an eye?