Survival of the Middle Class Questionable,What About The Poor

http://www.citynews.ca/news/news_33767.aspx

I'm not really arguing this article but i noticed that in north America everyone is worried about the middle class,but what about the poor,is the poor is just made up of too much immigrants so that makes them not relevant to the economy? Is the middle class the majority demographic of the north American economy.I quess the poor are not feeling any effects from the recession because.. they are poor.