A few things.
First, AOC is not running.
Biden is actually leading in very early polls.
Over half of Republicans favor Medicare for all.
You said Americans aren't going to let "it" happen, whatever that is, forgetting AOC, Talib, Ilhan, whoever, all got voted in by Americans.
And AOC calls herself a democratic socialist. She actually explains what SHE means by that:
"Ocasio-Cortez has likened her view of democratic socialism to Scandinavian social democracy. The congresswoman's progressive platform consists of a single-payer health care system that covers all forms of health care."
Not Venezuela, sorry haters.
https://www.businessinsider.com/ale...plains-what-democratic-socialism-means-2019-3