Massive anti-government protests broke out in Brazil in June this year in what was dubbed the Brazilian Spring.
Citizens turned activists, as thousands took to the streets forcing the government to announce a slew of reforms.
Among them were Melissa and Todd Harkin, who saw the mass rallies as an opportunity to push for change.
Al Jazeera's Gabriel Elizondo reports from Sao Paulo on the story that's part of the five biggest stories of the year through the eyes of those involved.
Source: Al Jazeera