So the crux of his argument was that the existence of ethnic enclaves would cause problems and split communities being the biggest danger of uncontrolled immigration. He worried it could lead to situations where these ethnic communities are manipulated and misrepresented by self-anointed "community leaders" who often re-enforce the already divided nature of these enclaves towards wider British society. Case in point: the loud-mouth extremist "Imams" who seem to end up as "leaders" of Muslim communities out of their own choice and out of the media/politicians deciding who best represents these communities, at the behest of the Secular minded learned people of those communities. He specifically talked about how immigration in such large numbers won't be spread evenly across the country, which wouldn't be so damaging for "community relations", but that the concentration of communities and "enclaves" is what leads to problems. His comparison with America also seems somewhat reasonable. He says that the issues of institutionalized racism and divided communities in America are a legacy of how America was formed as a country. But with the UK this problem has been artificially created by allowing many (not all) immigrants to remain segregated from wider British society. In America it's a case of blacks being denied rights in the past, but immigrants to the UK have arrived as free citizens. Now as I mentioned my own heritage is of immigrant descent. Paternal grandparents came here from Turkey in the 1960s. My Dad grew up here. My Mum came here from Turkey in the 90s. But we "integrated". We don't live among our own kind, nor did my grandparents when they first arrived. We live with other Brits (my area is mostly white, with some Asians and blacks). There's a difference between areas that have an "ethnic character", but outright ethnically "pure" enclaves where life is 100% distinct from the rest of the country are strange and cause division. Now I'm open to criticism and am happy to look at this from different angles and perhaps change my opinion at the end of it. In fact that might be very welcome as I feel like I'm on the "bad side" considering how the Powell speech has been portrayed in the media.