It is not about being nice to people. Ashok was more than nice, I mean most customer liked him reading the postings and the the news clip. He did NOT even have the time to think. It appears the guy shot him right after he entered, may be even from the back, probably did not even say the usual "Give me the money". If true, there is no precaution we can take if you work in those places.It is just luck. The only thing we can do is avoid those places for employment esp if the neighbour has Kaaleys. Some race are bound to be hated  beacuse of few who repeatdly kill innocent people for no reason.