I'm Brazilian, and I've been invited to ton of facebook events due to the protests in Brazil, one of then caught my attention, they are using trello to organize the proposals for the government. I found this fact very curious since all those protest started on-line, leaving aside if you are pro or against, this is a good example of how the internet/startups/etc enable people to do things.
If you guys aren't aware of what is happening in Brazil: http://news.yahoo.com/protests-planned-across-brazil-despite-concessions-155413790.html