A 37-year-old man was the sixth person to die of an overdose in Milwaukee County during a deadly weekend.  Five people died within a 24-hour period.  Local officials are still trying to bring an expanding opioid crisis under control — with very little success.  Five of the six fatalities were men and the victims ranged in age from 33 to 55 years old.  The Milwaukee County Medical Examiners Office reports four of the deaths were in Milwaukee, with one each in West Allis and South Milwaukee.