Can i just make the point that the Scots, Irish and Welsh regularly tear into we English with all kinds of smears and dragging up of alleged historical misdemeanors and we have to take it on the chin. We even give them a hard time occasionally, not to mention the French as well and it all seems to be fair game.
Why then do we get all excited when someone slights our Eastern European cousins? Do they have some sort of elevated status that I don't know about?

So what?

We have now sunk to a depth at which the restatement of the obvious is the first duty of intelligent men. [Orwell]

There is the traditional thing but I could include
the Germans,Americans,Belgians, even the Italians and Spanish to a degree.
No, it seems that we can slag lots of people off but certain nationalities are exempt.
I am of the mind that any insult should be met with an equally rude response or indifference or laughter.
I don't think I like too much protesting.

Well done mate, keep it that way. Do you know that women aren't allowed to show their necks in Maidenhead. They are forced to wear something called a Jaeger scarf.

I was in a pub in Maidenhead that got evacuated once.

Someone left an unattended scarf on the floor. People thought it was a Jaeger bomb.

Living down here does have some advantages. At least you can see them cry.

I had a similar discussion with my daughter about bullying triggered by a thread on HOL. Oral rather than physical bullying is really all about how you take it, if you are able to ignore it then it has no power. Very few people are strong enough to do that, everyone needs some reinforcement of their self esteem.