DETROIT — A Detroit officer and a suspect, who police said was “indiscriminately” firing shots, were killed Wednesday night on the city’s west side, the police chief said, prompting him and other city leaders to decry rising gun violence. Standing outside Sinai-Grace Hospital hours after what he called a “very sad and tragic event,” Detroit police Chief James White angrily denounced the rising toll of gun violence in the city and nation after one of his officers was shot by a suspect using an assault rifle. “The violence in this country is outrageous,” he said. “The assaults against police off…