Chicago Mayor Lori Lightfoot said Sunday that the coronavirus is "devastating" black communities in part because of the underlying health conditions that disproportionately impact people of color.Lightfoot said on "Face the Nation" that the high number of deaths from the coronavirus among African Americans is not unique to Chicago, but rather tracks closely with the death toll in large cities nationwide."The answer that we believe is right is because of the underlying conditions that people of color and particularly black folks suffer from, whether it's diabetes, heart disease, upper respiratory illnesses, the kind of things that we've been talking about for a long time that plague black Chicago, that lead to life expectancy gaps," Lightfoot said. "This virus attacks those underlying conditions with a vengeance."In Chicago, 72% of those who have died from the coronavirus are black. African Americans make up 30% of the city's population."it is devastating our community," Lightfoot said.