Music
Rex Features
The veteran musician made a strong political statement against the current government during his performance at the Empire Polo Field in Indio, California.
Waters released an inflatable blow-up pig from the stage with the words "Don't be led to the slaughter" written on its side. It also featured a cartoon of Uncle Sam holding two meat cleavers.
According to the Associated Press, underneath the pig was a ballot paper with Obama's name ticked.
Waters recently described Obama's Democrat rival Hillary Clinton as "ghastly".
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