I don't believe all of them are. And in fact I don't believe that even a majority of them are. Now if you want to say, "The democRAT leadership are...," or, "Those controlling the democRAT Party are...," then you have a genuine point that I cannot refute. But I know a lot of rank and file democRATs who are basically good Americans. People like Zell Miller who put their country ahead of party.
The Democrats ARE communists. There are many good patriotic Democrats who love this country, and are UNAWARE that their party is partially funded by and often led by out-and-out Communists. I don't know how old you are, TV, but I've been watching the spread of communism in this country for over fifty years. Anyone who votes for a democrat now is being duped into losing their rights, including free speech, and everything else guaranteed to us by the Bill of Rights.