We on the left who are pro-European and Internationalist wish to unite the peoples under a social model.
A social problem is one that concerns the way in which people live together in one society. A racial problem is a problem which confronts two different races who live in two separate societies, even if those societies are side by side.
When employers tell me they prefer married men, and encourage their men to have homes of their own, because it makes them so much steadier, I wonder if they have any idea of all that that implies.