I honestly don’t care one whit about someone else’s ethnic or cultural tics, twitches, obsessions and neuroses.
What I really care about are the groping hands of the idle in the pockets of the productive. I care about criminals who are still alive and on my street. I care about some other prick trying to curtail my culture because of what he claims are the demands of his.
Unless you are invited, get out of my pockets, get off my lawn, and get out of my life.
Pretty much.
You SHOULD care, because when a nation balkanises into a bunch of ethnic/cultural enclaves, then you don't have a productive society anymore. Why do you think your neighbour is going to give a rip about you, your property, or your pocketbook if your neighbour comes from - and refuses to let go of - a culture where the rule of law, private proerty, etc. are not respected? More "cultural diversity" means more people sucking at the trough - happens in every place where you have minority cultural groups that won't assimilate to the dominant culture in the country. Look at the Muslims all across Europe - they refuse to assimilate, but they have no problem living off of the generous welfare benefits provided by the UK and Sweden.