Maybe the union thugs should have left when they were told to. Anyone comes to my house, onto my property uninvited and makes a nuisance of themselves... They are going to get asked to leave. Then they are going to get told to leave. If they are still here, their last warning will come over the barrel of a firearm aimed at them and be accompanied by the words "I now consider you a threat to my life..." just to keep it all legal. What happens in the next few seconds is up to them.
So far I've only ever had to get as far as the "told to leave." Though I'm pretty sure he looked down and noted that my right hand was behind me, out of sight. I figure he (correctly) assumed there was a loaded weapon in that hand.
Funny thing about answering the door with a weapon in hand - always check to see who is on your stoop before opening the door. One evening I looked out to see a pair of Sheriff's deputies. I discretely slipped the Glock into the drawer of a table by the door before opening it. Figured it might get the deputies excited or something. ;-) And no, they weren't there for me, just wanted to see if I had seen anything/anyone on the street earlier. Apparently there was a break in down the street.
>> I discretely slipped the Glock into the drawer of a table by the door
heh... note to self: not a bad idea to HAVE a table with such a drawer parked next to the door.