TWENTY years ago, when New Yorkers asked me where I was from, all I’d say is that I grew up in Britain. Mentioning that I was born in Bangladesh drew only more questions, and New Yorkers simply wanted confirmation of what was to them the distinctive cultural marker: my British accent.

That accent was learned from imitating BBC News announcers on a cassette recorder. As a boy, I read about the destruction of millions of Jews and was gripped by fear: If white Europeans could do that to people who looked like them, imagine what they could do to me.

So I adapted, hoping to make myself less alien to these people so ill at ease with difference. I grew up not so long ago in a Britain that spat at nonwhites, beat us and daubed swastikas on walls.

Britain frightens its natives with the specter of a fifth column, and exhorts immigrants to integrate better and adopt British values. Do it and you’ll earn your stripes. But the promise is hollow, for Britain has no intention of keeping its side of the bargain.