"No man is an island, Entire of itself. Each is a piece of the continent, A part of the main. If a clod be washed away by the sea, Europe is the less. As well as if a promontory were. As well as if a manor of thy friend's Or of thine own were. Any man's death diminishes me, Because I am involved in mankind. And therefore never send to know for whom the bell tolls; It tolls for thee."
Most people in HK, particularly elites always behaved arrogantly towards Mainland Chinese. This was because they thought they were higher class under British rules even though British treated them as underclass.