Same thing that would happen here. No gun or militia will save you from a whole army.
it makes a huge difference. an armed population has a chance to create resistance groups.
Especially when you outnumber them greatly.
The only problem is that society also plays a part in this.
The people who were in the camps could've taken on the guards with minimal casualties... the problem is that no one wants to stand out. This happens in almost every situation where a massive amount of people are controlled by a few. It is very hard to stand up to authority.
I actually watched a fascinating video on that that recreated Milgrams experiments with different circumstances. In every one, no one stood up, but when they had one (control) person who they thought was with them stand up, a whole bunch stood with him.
So it only takes one to go against the grain for the ripple effect to bring change. Granted, these people weren't fearing for their lives, I just thought it was interesting.
That was the experiment I was thinking of. I can never remember Milgram... but I always remember the experiment, haha! ---