Name some "communists" in our government Mr. McCarthy.
And what would you do with this information? Its predeterined, deny, deny, deny, Alinsky 101. But the list begins with...
YOU. After all we are a government by the people, of the people and for the people. FYI: The People of the United States is the government...but not all of its people are pro USA, either through ignorance or design...you are the slave of the ideology that you serve.
One does not have to "claim" to be a communist in order to be a communist, one simply has to blindly promote and defend the communist agenda. Just as advised by scripture, "Do you not know that to whom you present yourself to obey, you are that one's slave whom you obey, whether of sin leading to death or of obedience leading to righteousness?" -- Romans 6:16
How is your communism proven? Via the prima facie evidence that your own words have provided....your words of ignorance or premeditation prove beyond any reason of doubt, that you serve a communist agenda.

You can call yourself....DEMOCRAT....LIBERAL...PROGRESSIVE....SOCIALIST, LIBERTARIAN ...etc., just as you have denied your party of choice's HISTORY ACTUAL, you are just as much a communist as was Joseph Stalin or Mao Tse-Tung.
It has been my experience that regardless of the testable documented and objective evidence provided....your first and only move in retorted argument will be a deflective denial. Its who you are its how you have been indoctrinated. So, I always allow your guild's own words to convict the obvious truth. Its a waste of time to present any direct evidence on an individual basis....I present general testable truths for anyone that is capable of the least amount of critical independent cognitive thought. A truth is best learned with one learns that truth him/her/self....as you have been programmed to deflect and deny.