“Population Bomb”, by Austrian documentarian Werner Boote, lays out the modern understanding of population demographics. That is, richer populations have fewer kids in order to have better lives for ”grownups”. The poorer populations accept a kind of moral aesthetic realism and have large families. It's common for immigrants from poorer countries to send money back to relatives (and not just their own kids), something that people from richer countries don't experience much. I made that point in conversation outside the embassy before we went in, and I ruffled some sails.
Outdoor embassies shown here are Austria and China, near UDC in Washington.