Sean, not all conservatives think that all liberals are worse than Hitler. The problem is that they seem to think Hitler 'just didn't do it right' and that they can do better. This is dangerously oblivious.
The most basic and important fundemental difference I have found between your philospohy and mine is that the typical liberal has no undertanding of either reality or historical precedent. In other words, liberals believe they can change the world for the better using the same methods that have been proven dangerously wrong before.
To believe that you can do the same exact things that have been done before and get different results time after time is one definition of insanity.