Its easier to talk about what I DISAGREE:
I disagree with vandalism; I disagree with looting; I disagree with violence; I disagree with brute force.
BUT
If you live in Brasil at least for 2-3 years, you would understand that even patience, forbearance and tolerance have limits. Something needs to be made. Something needs to be told. Something needs to be seen. Even for corruption there is a limit. Brasil could be one of the richest countries of the world, if not for the corruption.
Yes, I am sorry that among the protesters, there are some bandits - as in every gathering of people. Sad thing is press and media only show blood and bad news...
The fact is that at last Brasilian people woke up from their passivity. Every drastic change involves some pain...
Edit: to fix some possible misunderstandings: "Acorda, Brasil", in this case, doesn't mean "Agree, Brasil"; it means "Wake up, Brasil"