A polish person, called a pole
An Australian, An Ozi
A French Person, A frog,
an Italian, An ITi,
A Welsh person, A taffy,
A scotch person, A jock,
An Irish Person, A paddy,
How is it when you call a Pakistani person A P_______i,
P**ki has been used as an insult for at least 30 years it is unacceptable.
'Pole' is the correct designation for someone from Poland it is not an insult,
Ozzy is OK, they use it themselves all the time, but the rest are insults.
It's when you call an Indian person a '***' that the problem arose originally, or a Sri Lankan or a Bangladeshi. People from the sub-continent took offence, in much the same way as we would if called e.g. 'kraut'.