Do tell how if they all had an AR it would have saved the Jews from the Holocaust. The other side had tanks, Aircraft, artillery, vast amounts of ammo for all them and political motivation. So if all the Jews just had an AR they could have held off the German Army and the German population who supported that German Army? It is a false narrative sold to the dim witted and paranoid that having an AR in their closet allows them to take on their government and prevail by force of arms.
You couldn't hold off a two man team of 18 year olds equipped and trained for combat. One would pin you down while the other called in a mortar round or tossed a grenade or used an AT-4 or simply moved up and put a round in you. To pretend you can go toe to toe with an organized military unit is a fantasy fed by Ole Wayne so he can buy another vacation home.
You can use an AR or shotgun or hand gun or rifle to protect your home from an intruder or thief or drugged out junkies but that weapon won't do diddly if the military ever decides you are a threat. When the military sees a threat in a house or building, that building disappears. Ever see what military ordinance can do to a ever a brick or block structure?