Honestly, I would have walked out of the city before it came to that, but it is difficult for me to speculate what I'd do if they rammed my door down and took my possessions. It's difficult for me, in an imagined sense, to consider shooting the slobs who are 'just following orders' - not like they know any better (NOT a shot at LEOs!!!), and at the end of the day they're just trying to get by like I am. All the same, my firearms in times of disaster are my first and last line of defense, and having someone come by and just take them for whatever reason would be akin to declawing a cat and turning it's teeth to rubber.
I wouldn't just hand them over, but by the same token I'm not sure I could open fire on the invaders all the same. Until I do encounter the situation - and I hope I never have to - I simply cannot state how I would react. The situation to me screams a form of organized resistance without advertising it - know they would be coming, hide my arsenal, give them a few BB guns, then warn everyone else that they were coming to disarm us all.