Fair enough, if you feel obliged - but there's never any excuse for discourtesy and invective, which I see all too often. Or for losing ones cool.
The guys who treat the Groundstaff like **** invariably treat their crew the same way, especially their F/O's. I often wonder what these guys home lives and relationships must be like.
Spanners, it's a global phenomenon. A little bit of power goes straight to some people's heads. It's quite interesting as a social science. But in HK there's often a certain added ingredient - racial prejudice. Totally out of order.