Anyone who actually believes that Obama is a communist or a Marxist is too stupid to be one person. The man is the most right wing conservative Democratic President in US history. He's further to the right than Nixon or Eisenhauer.
The Republicans have been in thrall to the Milton Friedman and the Chicago School of Economics and their radical free-market capitalist theories, hence the vilification of anyone who proposes a publically funded social program as a "Marxist" and a "communist". Friedman believed that ANY social program is a distortion of the free market and the GOP has been selling these ideas to their base and the public at large relentlessly for the last 35 years. But Friedman's theories were exactly that: theories that had never been put into practice before Pinochet's Chile.
Long term, this kind of free market capitalism exploits workers in economies with no social safety net, no union protects, and no government protections (see China, Chile, Brazil) in favour of large multi-national corporations. Worker opposition to poor working conditions, or attempts to unionize or otherwise promote worker rights is countered with "re-education" programs, or the troublemakers are "disappeared" (see all of South America in the 70's).
None of radically free market reformed economies (Russia, China, Chile, Brazil or South Africa) have resulted in health, vibrant economies. None. All have resulted in high prices, volatile markets, high unemployment, and a struggling middle class. And the wealthy multi-nationals, and political elites bought up all of the publically owned assets at firesale prices and got rich. All of these countries were forced to accept free market reforms in exchange for assistance from the World Bank and the IMF and successive Republican administrations, and during Clinton's administration as well.
The right wingers here keep talking about the Obama wanting to transfer all of other people's money to the poor. The vilify the poor as "takers", social programs as communism, unions as the source of all communist evil, and Obama as a Marxist and a socialist, because these are the only protections the United States has against the Republicans turning the US economy into another Brazil, or Chile.
9 Out Of 10 Americans Are Completely Wrong About This Mind-Blowing Fact