Thumbs up sculpture unveiled as new artwork for London's 'fourth plinth'

LONDON (Reuters) - A giant hand with a thumbs up has been unveiled as the new artwork occupying the fourth plinth at London's Trafalgar Square. Mayor Sadiq Khan presented artist David Shrigley's sculpture "Really Good" on Thursday, a seven-metre (23 ft) high hand with a long thumb cast in bronze, saying it represented "optimism, positivity, the best of us". The plinth, built in 1841, was meant for a statue of King William IV but stood empty because of lack of funding. More recently, it has hoste