This is from Instapundit from which I have taken up one of the comments.

THE INTENSITY OF THE IMMIGRATION DEBATE, EXPLAINED:

Across the West, existing voters won’t give the left the power it wants, so they’re importing new ones.

And this is the comment that puts its finger right on the issue:

It’s not just votes, it fundamentally alters the character of the invaded nation, which is even better. It dovetails with their assault on Christianity, if they can also destroy the European nature of the West it will never recover.

They hate themselves and they hate you as well, whatever else they may say.