Chancellor George Osborne was booed when he took part in a Paralympic medal ceremony on Monday night.
The Tory cabinet minister appeared on the big screen before a medal presentation in front of an 80,000-strong crowd in the Olympic Stadium.
He laughed nervously as jeers rang out around the packed arena, as he prepared to give gold to Tunisia's T38 400m champion Mohamed Farhat Chida.
The Government has been under fire from disabled rights groups for awarding a contract to assess "fit for work" assessments to Paralympic sponsor Atos.
Rallies have been staged by activists in the past few days in protests at tests which have been described as "damaging and distressing".
A clip of the awkward moment quickly became a viral hit on social media, with George Osborne's name trending worldwide.
In contrast, former Labour Prime Minister and Chancellor Gordon Brown was enthusiastically cheered when he took part in a medal ceremony in the aquatic centre.