It's just possible that one day the English will boil over. The longer the problem festers, the worse it will be.
Yes, it is something that nags here too.
The thing is, relatively speaking, we've lived, since the second world war, in times of plenty. So while people carp about the cost of immigration (in various services) people aren't inclined to risk getting themselves into trouble objecting to immigration.
People tell me that the young have less difficulty with immigration than my generation. They seem to forget that the young haven't lived through the really tough economic times of the forties, fifties, and sixties, so the young have little feel for what things are like when resources need to be rationed.
As far as I can tell, integration hasn't worked despite the massive amounts of money thrown at it, as well as the compelling legislative pressure to overcome discrimination - for the most part we live in different communities, with different cultures, with different politics, and differing degrees of adherence to the rule of Law.
So we tick along with only the occasional outbreak of ghetto violence which disturbs us when we see it on TV.
But what might happen if economic circumstances change, and there is very real competition for all commodities and all services.
The thing about Powell was that he lived at a time when economic growth of the type we experienced now did not seem to be a prospect, so from Enoch perspective, he expected more and more people of different races and cultures all competing for the same limited resource.
His vision of violence might still happen, should economic conditions decline to any significant degree.