What I'm saying, is that you cannot place blame on beliefs.
Of course you can!
If the fascists and communists and Islamists didn't BELIEVE what they believe, they wouldn't have killed (and, in some cases, still do) all those millions of innocents people. It wasn't their belief alone, of course, that made them do it, but it was an all-important component.
Have you found anything to be perfect? It doesn't really matter what form of government is in place, what beliefs are implemented, things are not going to work out.
There's an enormous difference between being imperfect and being evil. The capitalistic USA or British governments are not perfect. But they didn't kill tens of millions of innocents, destroy all freedom, establish a reign of terror that lasted 70 years (and, in North Korea, still exists), or pauperized billions of people -- like those communist governments did, or do.
It seems that whether you believe in democracy or in communism DOES matter, after all.