"We are in such a divisive state in society that it tends to get politicized," the country's leading infectious disease expert said Monday night on "The Daily Show with Trevor Noah." "It's almost the one side versus the other," Fauci said.… "People take sides, like wearing a mask or not is a political statement and that's really unfortunate, totally unfortunate because this is a purely public health issue. It should not be one against the other," Fauci said.