The internet is awash with jokes about the reflecting pool in front of the Lincoln Memorial in Washington, which is now riddled with algae.The Trump administration spent more than $14 million (£10.5 million) draining the pool and painting the bottom “American flag blue” in time for the 250th anniversary of US independence. The president had described the reflecting pool – the scene of Martin Luther King’s 1963 “I have a dream” speech – as “filthy” and “dirty”, and promised to transform it into something “beautiful”. Instead, residual algae has “proliferated” in warm weather, said The Guardian, turning the pond “Wicked” green.

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