They certainly are. I try to resist talking to them, since it's a waste of time. Instead I work on the few liberal friends I have who are too intelligent to permanently resist my logic.
Yes when you find intelligent ones they at least eventually can be worn down and reasoned with over time. I emailed some moron the other day who actually claimed that the $260 billion Clinton surplus was a real surplus and was paying down the debt and there was no deficit those years under Clinton, which is all just garbage. The surplus was projected, and didn't happen, and wasn't real, and there was ALWAYS still a debt each year adding to the national debt under Clinton. How can you reason with someone so stupid they state a flat out lie as fact??? You just can't. You can only tell them that they're wrong, and that their information is totally inaccurate, and leave them to be as wrong as they want to be.