Migration in a nutshell
Invaders - Romans, Angles, Saxons, Jutes, Vikings, French. We've probably got a bit of DNA from one or more of these mixed in with Celtic and Ancient Briton.
Migrants -
Jews - didn't always get along with them, we even turfed them out of England but allowed them back
Huguenots - fleeing persecution in France, got their own rather nice church in Soho, were never much of a bother
Paddies - well known for settling in America but plenty came to Britain working as navvies. Perhaps our first truly economic migrants
West Indians - a boat full of chancers rocked up in 1948 and we haven't been the same since, the Windrush can be blamed for the start of the rot
Indians - Lots of Sikhs and Hindus turned up after the War to work in factories, many of whom had previous experience in industries such as steelworks. Birds of a feather flock together hence West London and Birmingham being over-run
Ugandan Indians - hoofed out of Africa by Idi Amin, these are the Indians who's kids are now minted lawyers, doctors, investment bankers etc
The 1990's - following the fall of the Berlin Wall in 1989 much of what used to be Eastern Europe now found itself free to roam so roam they did. Wave after wave of Polish and Romanians who decimated the UK construction industry and out-Pikey'ed our Pikeys
Balkans - after they'd finished bombing the sh!t out of each other the flotsam and jetsam drifted here
Blair - opened the doors to every Tom, Dick and Ahmed. Changed laws to let practically anyone work here which meant they then had a right to remain, nobody went back "home"
Boris - opened any remaining doors to allow for purely economic migration as he'd worked out we were about due for the next wave of minimum wage drones to do all the crappy jobs that not even the negroes would touch
War On Drugs - what a palaver. All we got in the aftermath were angry "interpreters" hell bent on chopping heads off
WEF - The Great Replacement. Why spend all that money on foreign aid and ploughing money into countries that will embezzle every shekel when you can simply instruct your acolytes in Britain, Germany, France, Sweden etc to simply allow them all to move to The West instead?
ECHR - despite Brexit we are still obligated to the human rights act meaning even if Abdul gets sentenced for rape we can't send him back
When did Britain stop being Great? Probably when Victoria turned up her toes, it's been pretty much downhill since then.
Imagine coming back on a troop carrier after surviving the defeat of the Axis only to look out your window with rheumy eyes in your twilight years as someone who can hardly even speak your language gets to tell you that you were a cnut and you are what is wrong with this country. And while you are at it take down that flag, it's offensive to migrants.