One in ten said they had carried a gun. According to the survey of more than 350 16- to 24-year-olds, 30 per cent of young people now think it is okay to carry a knife. Furthermore, 23 per cent said they would actually use one. More than one third of the young people surveyed by research company Tuned-In said the lack of police was the biggest reason for the increase in gun and knife crime. This compared to 19 per cent blaming drugs and...