Comment By Professor Alan Stevens Drug gangs report blasting UK cities as dangerous is too confusing The problems are nowhere near as deep in Manchester or Liverpool as they are in Rio de Janeiro – or even San Francisco A masked municipal policeman stands outside a shopping mall in MexicoAP On one hand it is right to state that there are communities in British cities suffering from social exclusion and marginalisation and that this contributes to their drug and crime problems. But on the other, these problems are nowhere near...