Less polarized? Huey Long got shot for FDR to get in, and actual socialism was a thing in the United States. Assassination attempts were regularly made against union busters.
Nowdays centre-right presidents like Barack Obama or Biden get called socialist, somebody on the international centre left like Sanders is apparently a communist and Chomsky is an out of his mind, left of Mao crazy person. Pink haired college kids are apparently a serious threat and there's a "culture war" or something.
It seems fairly abnormal, especially considering Medicare for All is apparently still crazy, even in the middle of a deadly pandemic the U.S. is currently doing terrible at.