1 .. so i've been thinking about this and i'm going to answer the question in some way. flame me if you will but this is how i see it.
i grew up on the essex-london borders, and odd hinterland of old-school working class prejudice and second and third gen immigration. if you define background as 'your own', then the people of gants hill and ilford that i grew up with are my people. a mix of aspiring white working classes, apsiring jewish wannabe middle-classes, and assorted 2nd and 3rd gen sub-continent middle-classes. this is, of course, a mass generalisation for the process of a shorter post. if i'm looking after my own by these standards, i'm looking out for the needs of people not just of long-term naturalised englishness, but whose parents or grandparents moved here for a better life, escaping prejudice or violence or just plain trying to do better economically. and who am i to complain about that? i'd do the same. i grew up around kids whose parents or grandparents fled the holocaust or earlier anti-semetic pogroms, whose parents fled slavery, the caste system, the empire, or just said "fuck this, we can do better in the uk". and i don't blame them. most of them did better than those who would probably be classified as ethnically british. good for them, they made their lives better according to their own standards. who wouldn;t want that for themselves.
2 .. what other ways can i define "one's own"? here in brixton i live with people born outside the uk. my downstairs neighbours are Mediterranean. my next door neighbours are jamaican rastas. across the road are albanians.
3 .. last week i started a new job. alongside myself there was a black british bloke, a guy born in india and raised in the uk who has a thicker london accent than me, a west african immigrant and an east african immigrant. my first training mentor was polish, my second born and bred walthamstow.
4 .. my point? if i owe anything to my "own" then i support immigration. centuries of immigration has helped make my city and communities what they are. it's given me friends, co-workers, housemates, neighbours. it's helped people i care about and love grow up safe and affluent. it's helped keep london, my beloved home city, alive and functioning.
5 .. what's wrong with immigration? .. it's used to drive down wages and damage working class unification.
6 .. it has many valid criticisms, all of which can be fought (IMO) by working class activism and unification; by putting aside notions of ethnic solidarity and "one's own" based on shared backgrounds we can, hopefully, overcome the bosses and their attempts to turn us against each other. this may be hard, it may not work. but the british working classes, whether individuals like it or not, have more in common with polish migrants than they do with the bosses class, and it is the exploiters and the dividers who are MY enemy.
that is all i have to say on the matter. let the flaming commence x