How envents like world cup and Olympic Games can help to change the Brazil's reality?

Events like the World Cup and Olympic Games can improve the financial situation of the country that will be the host city in the event.
With increase of turism the country searchs expand the market, so appeared more vacancies in jobs reducing unemploymente . South Africa hosted the World Cup 2010 with the objective of improve the financial situation of the country beyond of show the African culture ro rhe world and power to end with the misery of the country.
I think so the Brazil will bw a economically better country, showing the world that can be a country without prejudice and without social ineguality.
The World Cup 2014 and Olympic Games 2016 will change the Brazil completely.