A couple of years ago, Simon Barnes wrote a moving piece in this magazine about how his son Eddie, who has Down’s syndrome, had changed his mind about political correctness. Political correctness might be met with derision, he wrote, but it was also what made his son’s life bearable. In the not-so-distant past, Eddie would have been shut away and people like him made fun of in everyday conversation; now he is received everywhere with kindness and consideration.