>I'm Italian and if you won't let me into your crystal shop because I wave too much my hands when I talk and you're afraid I'll break something (I personally don't wave hands), I'll understand. I will be angry sure, but not with you: with the other hand waving italians.

Are you sure you wouldn't be annoyed if this actually happened? I find that a bit difficult to believe. Say, you walk into a cafe and politely order an espresso, and then the owner kicks you out because you're Italian.