Isn't that one of the main arguments for Brexit? It seems you're conflicted.
No, no conflict in my position.
Brexit can only affect people moving
legally from fellow member states; the problems of illegal migrants have nothing to do with it; don't you see the difference? It's those illegals camping at Calais, waiting to hitch a ride across the sea to England, that have rightly scared the shit out of so many Brits. But they are not European migrants; they are from Africa and the Middle East, places with no stake in the EU venture. It was the illustration of a zillion marching refugees that the Brexit camp cleverly displayed on its bus that created the fear (all of them decidedly non-whites), the blind belief that it was all Europe's fault, when the truth is that Europe is fighting the same bloody battle, too! It's as much victim of migration as is Britain, only far more so.
Those illegals will still be turning up and waiting there at Calais, UK membership of Europe or not. Is that more clear than I have been able to make it already? Brexit will not alter that in any way.
Jobs of European member nurses and doctors in Britain are under threat. What happens when or if their fear of local attack because they can't speak with some goddam regional British accent or another comes to a head, and they go back home? There has already been a murder in England of a Pole for no reason other than his being Polish. May promised them job security after Brexit; as with St Trump and Nuclear Deals, that could vanish at the change of leadership. When morality goes out of a nation's character, the evil rises unchecked, and baby, is there evil!
That's the true colour of the rabble for which Boris is standing holding a banner.