We used to believe communism (and socialism) were evil system, and commit our nation to defeating communism. We went so far as to fear communist ideology creeping into government, entertainment, and education. That was half a century ago.
The truth is we no longer consider communism as evil, and it's soft side (socialism) is embraced in the majority political party, it's fed in entertainment, and taught in education. Half the population has come to expect individual financial benefit redistributed by government from the other half that has been more successful. Once you've gone red you can't go back (without great pain, riots, civil unrest, etc).