ay or set to take place later Wednesday, notably in Sao Paulo, Brasilia and Belo Horizonte.On Tuesday, at least 50,000 people flooded the streets of Sao Paulo, Brazil's most populous city and the nation's industrial capital, to vent their anger at the country's politicians, including President Dilma Rousseff.Several hundred of them peeled off from the main march and set a car and a police stand on