Racist terms, or ones used as such in that past, are generally used for a near neighbour, it being human nature to dislike those more than someone a million miles away.
There is frogs for the French, who in turn call us rosbifs, there was the English disease, known in England as the French disease (the pox), filer a l'anglaise, or taking French leave (going AWOL) a paddy for a tantrum, and a paddy wagon for a police arrest van.
The French, English and Irish are not pleased to be called any of these things, any more than the American Indians or the Aberdonians, Welsh, Dutch and Spanish.
Why is it worse to be racist about an American Indian than about someone nearer to home? All of these peoples have had things to suffer in the past.