Not against 100 thugs coming from more than one direction.
People need to move out of large cities.
you can have a large group of people moving in on a remote, standalone farmhouse too. the ones that can get there may be tougher too.
Liberal parasites are unlikely to come in those numbers. My guess is small gangs, and those will get chewed up pretty quickly by the bad luck of picking the wrong target. The problem with 100 thugs attacking at once is that they won't do that in the first three days, and after that most target homes will have more ammo than food. They will end up fighting each other for what little food they get when they take a single family home, and they will split into smaller groups or kill each other over food. Unless they have an LDS roster, they will not expect much after a dangerous battle, or they can burn you out and get nothing at all.
“Not against 100 thugs coming from more than one direction.”
A target rich environment.