The goal of Marx and his subsequent communists was not to help the working class. It was to eliminate the middle class. What they loathed about the free-market system and industrialism is that it created the middle class. Many with the elitist/ruler mentality throughout the 19th century tried to devise away to eliminate the middle class to return their nations to the ruler/ruled relationship that gave the rulers so much more power.
Marxism/communism and Fabian socialism are just a couple of the means to eliminate the middle class.
And you're right. Many in America are at the borderline economically. They are just making their monthly payments, not putting anything into savings or retirement, and they may not be in a good position to sell their homes and relocate to a cheaper home and neighborhood. If they're taxes go up just a bit, they will be running at a deficit. The next step is to ask for some “assistance” from the government.
The only assistance I need is to be able to keep my earnings.
And that is precisely what Obama intends to confiscate from you with exorbitant taxes. That which isn't overtly confiscated by taxes will be covertly confiscated by hyperinflation.