Like all crime statistics, South Africa’s need to be treated with caution (South Africa ‘like a war zone’ after surge in murders, 12 September). Yes, murder rates are about the most reliable indicator of levels of violence. And, yes, a 7% increase in murder in 2017-18 over the previous year as part of a continuing upward trend evident since 2011-12 is worrying. But a sense of both perspective and context is needed too.