Very true. Seriously. First, consider how hypocritical and idealistic most liberals are - they appear to be somewhat disconnected from reality, correct? They say one thing, do another. They believe in the screwiest things in spite of all evidence and history to the contrary. They blindly follow their elite "leaders" and march to the agenda in spite of what the rest of us would call common sense...
After considering their typical behaviors, Google "Psychosis" and/or "Delusional Disorder." Scary, but it appears liberals genuinely do have a diagnosable and treatable mental disorder.
Hmm, sounds like a cult.