The propaganda in the early years of promoting multiculturalism/multiracialism in the West, involved saying that the core culture will not change, but instead will be enriched by diversity. People, if they had any degree of critical thinking should have been questioning this, decades ago. But, good men typically do nothing. Now we are seeing the truth come out, at the 11th hour:
https://www.jihadwatch.org/2018/08/muslim-in-uk-its-not-immigrants-who-need-to-integrate-its-the-white-majority
https://www.alaraby.co.uk/english/comment/2018/8/29/immigrants-dont-need-to-integrate-you-do
“There’s no such thing as integration for immigrants and their descendants. Growing up in rural Britain – Wales, to be precise – I was the poster child for immigration. My teachers liked me, I was a prefect, I captained my team in the Eisteddfod – an annual traditional Welsh competition. I won ribbons on Sports Day, attained high grades and did after school activities. I did everything they tell young brown kids to do. It never occurred to me that I was the only one who considered myself just like everyone else. But once I was far enough away, several years later, somewhere between Cairo and Gaza, after a Facebook exchange with an old classmate who told me magnanimously that he knows I’m a good person so I don’t need to apologise for whatever it was that some Muslim had done, a file opened in the back of my mind.