Well the common element seems to be stupidity.
Some idiot thought it was OK to be lax on security and not screen out stupid bangers and the other case is a stupid guy going after another stupid guy that may or may not have been fooling around with the first idiots stupid wife.
Stupid people suck!
No mention in the latter case of this being a permit carrier and you know the bangers don't get their legally...so once more the wrong people with guns victimize the right people who are unarmed.
Stupid.
