Are migrants ‘stealing’ jobs; does South Africa have more asylum seekers than any other country in the world? These are some of the claims we explore this week in the midst of some of the worst xenophobic attacks in recent years in South Africa. Plus – could you go to jail for reporting false statistics? You might in Tanzania where they are in the process of bringing in a law to tackle publishing bad figures. We ask whether journalists and researchers should be worried. This edition of More or Less was first broadcast on the BBC World Service.