Are they going to send Jackboots to every single person's house? The beauty of a general strike is you just stay home, you don't even have to gather in the streets. Sure they may send a few groups to make people leave their houses, but they can't do that for the entire country. If you tried to fight them with peashooters, you are going to get massacred. They have cruise missiles, Apache gunships, tanks, chemical weapons, etc...etc...if they are truly a tyrannical government like Russia, they will just kill everybody whether they have a gun or not. But if they have no one to run the factories or feed the army, or keep trade afloat, they are literally powerless. It renders military aggression completely impotent.

Edit: Look what Russia has done to the very well armed citizenry of the cities of Ukraine, they have blown them to shit. The cities are rubble. The military of Ukraine and the equipment being donated to them by the West is what is keeping them in the war, not a bunch of their citizens taking pot shots with AKs.