Greenpeace has been responsible for many a fatuous stunt over the years, but its latest video has a point. It shows an animated Boris Johnson making a speech outside 10 Downing Street, boasting about his government’s environmental achievements, like banning plastic straws. Meanwhile, plastic waste starts to rain out of the sky, engulfing the Prime Minister as well as all of Downing Street, the Cabinet Office and much of the Foreign Office, too.