Leningrad comes to mind, although in the end the Germans lost. Difference is, in Leningrad you had a commissar on every block to keep the people motivated to stay the course or get a bullet to the mullet.
Our American city folk would fold after the first week. To lazy and to dependent of the Gubmint!
IMHO
American city folks would wet their trousers at the mere thought of defending the country (there will be some exceptions to that but almost invisibly small).
America's backbone is in her small cities and towns and in the country.
These folks are armed to the teeth and well-practiced with weapons.
Given that the communist politicians in America are coming out of their hidey-holes, one has to wonder who is behind them? Who do they look to as their armed support?
It surely isn't the U.S. military or the Veterans.
It isn't some militia.
Who is it?
Surely AOC doesn't think she is going to take over the Country without some kind of military support. One has to wonder where she thinks her support would come from?