Racism has ultimately two logics – that of exclusion – the ultimate form of which is genocide; and that of exploitation, the ultimate logic of which is slavery. However, in most concrete historical situations these two logics are practiced in a complementary way.
from
Quakers north east 
Have We learned to differentiate racism from culture shock which prevails even within our own race, north and south, east and west (not necessarily simply confined to those from abroad). Ideally We can believe We all speak a similar dialect but the english language is prone to strong regional changes – misinterpretation/humour even within our own English race. No it is not a mental illness. It is a fact – that is not to divide but to understand as an relevant issue. We need to become more understanding of words and mannerisms within our own country too and show some charity at home to our “friends”. The word Complementary sounds wrong. It has that strange similar word conotation and also can mean favourable, making better rather than simply effective combination.