It’s fascinating to see people who are offended by pretty much everything – gay people getting married; students removing poems or portraits of politicians from college walls; toilets that anyone can use; councils putting up fairy lights to mark religious festivals – insist that they are the implacable enemies of people who take unnecessary offence at the world around them. I could, on any given day, fill the switchboard six times over with callers primed to rail furiously against ‘snowflakes’ and ‘social justice warriors’ who take offence too easily.