The media is ramping up the class warfare stories because liberals generally think the middle class (much of whom used to be poor and worked its way out of it) should care. But the middle class is concerned about its own situation and has worked hard to maintain it.
Nonetheless, the impoverished in the US are not, in general, the starving waifs that you see in Oxfam commercials imploring you to give money to third-world poor. The Monk has seen impoverished people outside of the US, and it is wretched. As the Heritage Foundation report linked in the title of this post shows, however, most of the US poor are not nearly that bad off.