Panto season is just about over and we’ve booed the baddies to our hearts’ content. But as the curtain falls on this distinctive sound until next Christmas, should we consider jeering more often? This is not a call for more of the antisocial chomping, swiping, swilling, peeing or worse that have made the headlines recently. It is an inquiry into the old – and possibly fine – tradition of collective dissent, expressed in the once almighty audience “boo”. In pantomime, such protests have little sting – they are so infused with obliging bonhomie that we may as well be clapping....