These are people who lost their jobs, spent months sometimes years looking for another one, could not find one, and gave up.
We have 720,000 people who are completely unemployable. Nobody will hire them to do anything except maybe pay them sub minimum wage and abuse them until their bodies break or they run out of money to steal.
That number is going to keep growing on top of the number of full-time working homeless.
In a country with more guns than people sooner or later that's going to be a problem. As automation continues to devour jobs we will eventually hit a tipping point where we can't pay for the services we need to have a even vaguely functional civilization. Police and fire will go first and you'll dial 911 but nobody will come.
A bunch of libertarian numb skulls think this is cool because they think they can just go around shooting people and for a time they are right.
The problem is the horde. Your dipshit libertarian uncle shoots somebody dead because they wandered into their house looking for food. Okay fine whatever. But another guy comes and this one has a baseball bat. So your uncle shoots that guy. The next guy has a machete and the next guy has a gun. He gets a few rounds off but your uncle is a crack shot so again down he goes. Sooner or later two or three of them show up and they have guns and your uncle kills one of them but the other gets a shot off that hits your uncle square in the arm and now he can't hold his rifle.. but damn your uncle is like John wick or some shit he finishes the other guys off. And in comes the next batch of them and this time your uncle has one good arm can't move fast enough and his leg gets taken out. But again your uncle is fucking Superman right so he kills them all. So now with a bum leg and a bum arm the final batch of guys shoots your uncle dead.
That's why you can't let civilization collapse and be okay. Once that happens there's a limitless supply of people who are coming to kill you and you have to kill every single one of them but they only have to kill you once.
But if rationality worked with these numbskulls then they wouldn't be libertarians would they?