Your tag line “an armed society is a polite society”.
In this case, the armed person, the shooter, was NOT polite. He was insane and I hope they put the old bastard away for the rest of his life and I hope he lives a long long time.
To murder some one in a movie theatre, before the movie even starts, because he is texting the baby sitter, is the mark of his insanity.
I disagree, FRiend. It is the mark of evil.
If you're right, we are rid of two bad guys.
The guy who got shot learned a widely understood lesson too late;
Don't pick a fight with old guys, they're to old, too tired to fight, they'll just shoot you.