I know that if I don't pay my taxes, at a certain point, violent action will be taken against me,  such as trying to get me handcuffed or so.  If at that point, I resist (for instance, using self defense with a gun myself), I will end up getting a gun pointed at me.

Of course, as I don't see the point in doing that because I will lose in the end, I pay my taxes.   Exactly in the same way as the restaurant holder pays his "protection" to the local maffia, and they don't explicitly need to point a gun at him.  He knows that he's in danger if he doesn't, so if you have some wisdom, you don't let it escalate to that point.

Do you know personally people who got a gun pointed at them by Stalin ?  Does this in any way prove that Stalin didn't use violence to obtain from others what he wanted ?

To answer your second question: I live in the European Union of Socialist Soviet Republics.