Chicago police officers and 911 dispatchers will receive enhanced training on interacting with people in crisis, particularly those with mental illness, Mayor Rahm Emanuel said Friday.The announcement came the same day that the attorney for a white Chicago police officer accused of shooting a black teenager 16 times in 2014 said the officer and his family are receiving death threats.Jason Van Dyke’s attorney said after a status hearing that Van Dyke has no formal protection, but police are aware of the threats and are …