Don't forget that what is understood as "poor" in Russia would be an unbearable poverty in some developed countries.
Makes me wonder how they classify people living in these buildings. Are they poor or middle class because they have a roof over their heads, electricity and running water.
Poor in Russia = Unbearably poor in Luxembourg = Middle class in Romania = Wealthy elite in North Korea
When you define the term "poor", you should also take in to account the cost of living as well. A large part of the poor people in Russia grow their own vegetables and other types of food. Their expenses are quite low, when compared to the "poor" people in the Western nations, such as Germany and France.