AL Kennedy discusses the addictive nature of hate.

'Religion', she writes, 'was once called the opium of the masses; hate is now the Oxycontin of the masses. That low thrum of resentment, spikes of rage, hate gives them a logic, an addictive rush.'

Producer: Adele Armstrong Sound: Peter Bosher Production coordinator: Gemma Ashman Editor: Bridget Harney