I agree entirely with Grey. Yes, I know we've roasted Merlin previously for perceived racist remarks. I do not think this is anything like that - there's been a nasty racist incident in his area, and with what's happened previously in Bradford in the UK, and what's going on in the France right now, he has the right to ask. It's a bit ironic that Merlin's legit query is responded to out of people's bias towards him!
I would venture to suggest that the majority of us on this forum are not living in areas of high racial tension. If we aren't, lucky for us, then. If we are, then what is the cause? Racism doesn't just come out of a bottle - it has to have some root cause. Middle-class professionals appear, as they do in the USA and elsewhere, to get along regardless of their ethnicity. Race riots appear to happen at the less-educated, less-wealthy end of the social scale. So 'racism' isn't endemic throughout social strata. Or so we would believe.
For everyone who snipes at Merlin, ask yourselves very honestly how you'd feel if your teenaged daughter or son (or sibling) came home with a boy/girlfriend from Nigeria or Pakistan, or even someone whose grandparents did? Totally at ease with the situation/no questions asked/no slight qualms at all/happy if they're happy, etc? It doesn't have to be a full-on, SS-style hatred of people outside your caste to remind us that racial 'preference' lies beneath the surface of much of British society. I'm not sure about Ireland, since I doubt that the non-white uptake of immigrants is anywhere near so large, but it would be interesting to hear a response, nonetheless. Doors open wide in a cheerful welcome?