Ok, to answer the original question...
I'm European (Belgium) and play on the US Server.
I tried the European server, but prefer the US server. There are not as many people playing on European server and since the districts are divided into language groups (English, French and Spanish i think) it reduces the amount of people even more. That leads to less possibilities to sell/buy too and finding a PUG.
To react to that accusation of racism.. My question is: Do you get into these groups with Spanish and French people who dont speak English in the English districts? If so, I understand it's very annoying for communcation and maybe even "arrogant" of them to refuse to speak English. However, you cannot say that it's arrogant if YOU are the one playing in French districts.. and expect the others to speak English.
If in English district, speak English.
If in French district, speak French.
AND yes, you will see Chinese, Spanish and sometimes French (very rarely though) on the American Server too, but not in a PUG! Everyone speaks English here to improve communication.
Btw in my guild it's like 33.3% Europeans, 33.3% Americans and 33.3% Asians. Perfect combo, and we all speak English

Plus I know a few Swedish here
So I would say, give the US server a try, if you dont like it, you can always go back to the European server afterwards (you can change 5 times total).