I too have come across more Russians of late and the visible ones at the front end (running businesses) seem perfectly normal people who do indeed learn Spanish quickly.
But the mostly invisible underside is never far away according to reports in the local newspapers. A Spanish notary and property developer have both been shot dead in broad daylight by Russians, in separate incidents.
And the Chinese, increasing in numbers like an influx of rabbits, are just as friendly and sociable at the front end while further reports in local newspapers talk about Mafia gangs extorting their own people behind the scenes, chopping them to pieces if they don’t pay up.
While talking about foreigners, I could mention the Albanians but what would be the point?
I show respect most people in life, especially those who seem to have easy access to choppers and guns.