Dealing with idiots is a skill that all intelligent people should learn. Anybody with the ability to rationally analyze an issue, and who thinks in terms of objectivity and who strives to think clearly, is outnumbered. They need to learn how to not draw too much attention to themselves, and to get around the fact that morons cannot be reasoned with.
The moment you encounter your first real idiot, or a set of them, you find that it is not funny at all. It's scary and frustrating and you can't keep that look of disbelief off your face. They off course can sense your scorn. Idiots are good at sensing when other people look down on them, mostly because it happens so often. They see your scorn and think that you believe yourself to be a superior person. Of course, you do, but they won't know why. If there is a difference in race they will ascribe it to that, if there is a difference in education or social class or religion or nationality they will ascribe it to that. Idiots never know that they are idiots and so they never realize that that's why you hate them.
It is futile to try to to convince or seriously converse with somebody who is wholly emotionally invested in the wrong idea. Relationships with them should be kept on light topics, sports, food, alcohol, weather, the little things that are of no consequence and can fill up conversational dead air around a dinner table or at a bar. They will want to discuss weighty matter with you, because things like religion and politics are how they discern their clan, the people they like. You have to be on the same dumbass page with them or you are the enemy. Your job is to avoid it. Leave if you have to, or find a way to change the subject.
The truth about them
Your average moron is twice as moronic as they let on. Lets say you hear somebody talking about “health-care death panels” at work, know that they are showing you the stuff that they thought about and are fully certain of. They know this to be true and believe their logic to be insurmountable. They are not voicing the million other idiot beliefs that they have with minor doubts, this is the shit that you, Mr educated-and-rational-thinking-smarty-pants, cannot possibly counter.