Some of my suggestions based solely upon my observations:-
Spitting in public (I'm not going to say who the main offenders of this are)
Pushing in at a queue especially in Qtel (traditionally dressed ladies are the worst offenders with this)
Grabbing a parking space when someone has been waiting by it patiently to be vacated (traditionally dressed men are the worst offenders with this)
Running a red light at roundabout where you know there are no cameras(Land Cruisers are the worst offenders of this) - There are loads of driving related shameful acts in my opinion, but I will just leave it at these two for the moment.
Not being prepared to bring an item of jewellery out of a display window to be viewed purely based on appearance of the requester (no this has never happened to me, but I have seen it happen to others)
Some of my suggestions based solely upon my observations:-
Oh heck... that will do for the moment...