Summer Olympic Games demand for tickets to all levels of each event, there was controversy when seats set aside for sponsors and National Delegations went unused in the early days. A system of reallocation was put in place so the empty seats were filled throughout the Games. Rio de Janeiro, Brazil hosted the 2016 Summer Olympics, becoming the third city in the Southern Hemisphere to host the Olympic Games after Melbourne, Australia, in 1956 and Sydney, Australia, in 2000, and the first South American city to host the Olympics. The preparation for these Games was overshadowed by controversies, including the instability of Brazil's
LGBT athletes in the Olympic and Paralympic Games Vancouver, only six athletes, all women, were openly lesbian or bisexual: In the 2012 Summer Olympics in London, 23 athletes out of the 10,768 participants were openly gay, lesbian or bisexual: LOCOG was the first organizing committee in Olympic history to include a commitment to diversity in its bid. The organizers publicly supported pro-LGBT concerns during the lead-up to the Games, such as during Pride London 2010, when special pins featuring the Games' emblem and a rainbow flag were sold as part of a wider range celebrating various aspects of diversity. LOCOG chief executive Paul Deighton stated that its vision