The ghost of Enoch Powell hangs over Britain this weekend, with a smile on its thin lips. If you are too young to remember him, Boris Johnson offers a recrudescence. Powell was a genuine classical scholar. Cambridge awarded him a starred double first in Latin and Ancient Greek in 1933. Johnson was so-so academically. His failure to achieve a first at Oxford enraged him. But, like Powell, he learned the value of dropping a Latin phrase in a class-ridden country, which still thinks a classical education is a sign of superior intelligence.

Both told monstrous lies: not the usual dishonesties of politics, but lies that break people’s lives. Powell’s “rivers of blood” speech had a title adapted from a line from Virgil, but that didn’t make it classy. He unleashed hatred and violence against black and Asian immigrants and their children in 1968 by using the story of an old white woman in Wolverhampton. She had lost her husband and sons in the war and her reward was to be intimidated by “Negros”. Her “windows are broken. She finds excreta pushed through her letterbox. When she goes to the shops, she is followed by children, charming, wide-grinning piccaninnies. They cannot speak English, but one word they know. ‘Racialist,’ they chant.”