Giant thumbs are invading London, and it's all very disconcerting. Go to the Barbican's Pop Art Design exhibition from today and you'll see a version of César Baldaccini's 1965 sculpture Le Grand Pouce.
And, if David Shrigley gets his way, there'll soon be a colossal thumbs-up perched on Trafalgar Square's fourth plinth as well. All these displays of optimism are incredibly off-putting, not least because they're being executed in such a cheesily McCartneyesque manner. This isn't right. London isn't cheerful.
Perhaps the answer would be to ship over the giant middle finger that David Cerny just floated past the residence of the Czech Republic's president. That would be a much better fit.
