Unfortunately, the practice has a longer history in the area of Pakistan, so even if we accept your argument that it was entirely classist (which I don’t, given that I’ve read some people who tried to report it got sent for sensitivity training), being more selective about immigration still comes out ahead on the matter.
So if your police force is too “lol class” to handle the situation, and it won’t be realistically fixed soon, then you need to plan for that when setting your other policies.
And why wouldn’t the lower classes face the brunt of the cost of blind multiculturalism? If they were the high-charisma types that are in danger from going to concerts, it would be harder to sweep under the rug.
And as you might imagine, I don’t want this sort of thing to come to America, which means putting a stop to it before, rather than after, it starts. Because the same “it will never happen” arguments are made by the same ideological groups.