And just to catch that one before the gun fetishists try using it against us, we ALSO treat knives the same way these days in the UK, and there's the legal trend that any dispute may head in the same direction. Once discussion turns negative to the point where there is no common ground to agree on, the most logical conclusion is to recognise the fact and walk away. There is never any justification for violence between adults, and it always takes two to make an argument. Remove one - yourself - and the causus belli disappears. The other side has as much a right to an opinion as you do, and you as much right to yours as they do to theirs: live and let live.