It seems to me that the vital requirements for a economically successful and democratic nation are:

* Freedom of Speech

* Private ownership of property

* A fair judicial system available to everyone.

Communists are opposed to all of these ideas. It seems to me that the Democrats, and particularly Obama, are not strong supporters. Democrats are close to endorsing "thought crimes." Obama wants to redistribute wealth, which amounts to confiscation of private property. (Democrats say they have been doing that for years with the progressive tax system, but to me that is different from planning to tax one group and give the money to another group, as Obama proposes to do.) Finally, Obama says he wants judges that do what is "right" rather than what the law says. Here is a blog on the private property issue.

http://volokh.com/archives/archive_2008_10_26-2008_11_01.shtml#1225037670