Lets just get it over with and quote Orwell on immigration. This was written in 1947, two years after labour won on a radical left-wing manifesto (the one Tony Benn's most proud of!), of which Orwell was a keen supporter:
One cannot, of course, do very much about this kind of thing. It is the contemporary equivalent of anti-semitism. By 1947, people of the kind I am describing would have caught up with the fact that anti-semitism is discreditable, and so the scapegoat is sought elsewhere. But the race hatred and mass delusions which are part of the pattern of our time might be somewhat less bad in their effects if they were not reinforced by ignorance. If in the years before the war, for instance, the facts about the persecution of Jews in Germany had been better known, the subjective popular feeling against Jews would probably not have been less, but the actual treatment of Jewish refugees might have been better. The refusal to allow refugees in significant numbers into this country would have been branded as disgraceful. The average man would still have felt a grudge against the refugees, but in practice more lives would have been saved.
So also with the Poles. The thing that most depressed me in the above-mentioned conversation was the recurrent phrase, “let them go back to their own country.” If I had said to the two business-men, “Most of these people have no country to go back to,” they would have gaped. Not one of the relevant facts would have been known to them. They would never had heard of the various things that have happened to Poland since 1939, any more than they would have known that the over-population of Britain is a fallacy or that local unemployment can co-exist with a general shortage of labor. I think it is a mistake to give such people the excuse of ignorance. You can’t actually change their feelings, but you can make them understand what they are saying when they demand that homeless refugees shall be driven from our shores, and the knowledge may make them a little less actively malignant.
Also, if you think a twitter bot is thought police I suggest you re-read 1984.