Unfortunately, this article doesn't tell us all the facts of the case (newspapers rarely do). Who knows what the group of friends was saying to Mr. Ung.
If Mr. Ung was in fear of his life (one man against a group of folks who were following him and MAYBE were threatening him in some way shape or form)... well, if Mr. Ung feared for his life, then I do not think this has any bad / negative news for CCW holders.
If on the other hand, Mr. Ung decided to show them who's boss and whipped out his pistol and started shooting and had no fear for his own life... then it's Mr. Ung who is in trouble. I still do not think this paints CCW carriers in a bad light. Yes, one bad apple can spoil the bunch, but RARELY do you hear of someone acting irresponsible with a CCW permit. I'm not saying it doesnt happen -- it certainly does. But usually, its the bad guys who have no permits (or right to possess a firearm) who are in this position.
Moosie