conservative without being cruel, hateful, or bigoted. In fact, I live in an area where many people are conservative, but only because everyone around them has bought into that ideology, so that is what they have heard all their lives and what they experience as part of their "tribal" identity. Nevertheless, many of the conservatives I know are not nasty the way Coulter and Trump are.
Most people hold their opinions and their group affiliations not because they have thought carefully about them, but because they have never given them any thought at all.
Fish don't know they're wet. They just think that is "how it is." They cannot even imagine "it" being any other way.
I know many people, including a lot of my own relatives, who identify as as conservative Republicans, but they are good, kind people who have been raised in loving families. They are "conservative Republicans" and vote Republican in every election simply because that is part of their family and community (tribal) "identity."
True, being constantly subjected to RW propaganda from FOX, RW radio, and other such sources can eventually twist the perception and attitudes even of people who have always been decent and fair, but the sort of nastiness we see in a Trump or a Coulter seems to me to have deeper roots than that.
Unfortunately, a lot of kids who are raised by affluent, disconnected, and uninterested parents spend their lives trying to be or do what their inner child hopes will win the approval of their parents--even long after those parents are gone.
Or else in their insecurity, they devote all their effort to making themselves feel "good enough" by acting superior and putting other people down--especially if their parents had that attitude themselves, because the child tries to identify with the parents as a way of winning their approval.
So no, I am not saying people whose political pinions differ from mine were abused or neglected as children. But I am saying that unless something went very wrong in the wiring of a person's brain, wither genetically or during gestation, the physical and emotional environment that person experienced as a child will have a lot to do with whether he or she grows up to be kind, accepting, and fair toward others--or nasty, abusive, hateful, and viciously bigoted instead.
Tribalism is natural and instinctive, because in nature the "other" really is a potential danger, whereas those who belong to one's own family/tribe/community are the people most likely to represent safety and security. The more similar to us other people are, the more likely they are to trigger the "one of ours, and therefore safe" reaction.
That is why the pie-in-the-sky claim that racism must be taught and that little children don't see such differences or care about them is simply nonsense. Until the age when an infant starts exhibiting stranger fear, that is undoubtedly true--but stranger fear kicks in right about the time the infant is able to move around on his own and thus get beyond the protective reach of its parent/caretaker. Thus, if a mobile infant encounters a potentially dangerous "other," he screams for his parent/caretaker.
(BTW,when the "stranger," whether male or female, is taller than the average woman and has a deep voice, he or she is much more likely to trigger the squalling stranger-fear reaction in an infant--which makes sense if you think about it, because in nature, a strange adult male is usually more dangerous to an infant than a female, whether familiar or not.)
In nature, which is where we evolved in small, closely knit groups, if someone looks very different from everyone around you, then that person is more likely to be "not one of us" and thus a potential danger.
That is why children must be taught to be kind and tolerant of the other, to extend to those who are not just like themselves the same ethical concerns they would extend to members of their own group, and each new generation of children must be taught that lesson anew. It is not something that can be left to chance or to the idealistic belief that children are innocent of prejudice against or fear of the other.
If a child's social environment is diverse, and if the people around the child treat everyone with the same kindness and acceptance, regardless of difference, then the child's sense of "tribe" will include diversity. But even if children go to a daycare or school populated by a lot of kids and adults from different backgrounds, it is the home environment that will have the strongest influence for most children. So if their family and the people their family socializes with are bigoted against those who are not like them, then the child is likely to accept the family's bigoted attitudes despite being exposed to different people and different attitudes in daycare or at school.
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There's some brilliant people with bipolar--Many high-profile successful people. I hope this helps you feel better. 
