People get the Government they deserve, so the saying goes. But maybe in Brazil a more accurate paraphrasing might be… people get the government they have been paid for.
The footballs laid out in front of the Congress building in Brasilia, one for each congress member, are symbolising that the ball is now in the Congress court and they should get on with anti corruption reforms. Such as eradicating the practice of vote buying. However, this only happens because people are prepared to sell their vote! It is up to each individual voter to bring about the changes they want to see happen.