30/07/2016 GMT

In a special sport episode, Witness looks back at five key moments in the history of the Olympic and Paralympic Games. The programme meets Nadia Comaneci, the Romanian who charmed the world by scoring the first 'perfect 10' in gymnastics and Derek Redmond, the British runner who reduced the world to tears when injury forced him to hobble to the finish line with his father. Witness also travels to Kenya to meet blind Paralympian, Henry Wanyoike, who set world records which still stand to this day and became a well-known disability rights campaigner. In East Timor, the team meets a policewoman who made it to the Olympics even though her home had been torched by Indonesian troops. Finally, British archer Margaret Maughan looks back to the first Paralympic Games in Rome in 1960, when the organisers were still trying to work out how to host a sporting event for disabled athletes.