It’s not just that their views are diametrically in opposition.
Someone can prefer the color black and another white and each think that their preference is superior without causing strife.
The real problem is that one group insists on the enslavement of the other group and is willing to use force to implement their goals, and the other group insists that they not be enslaved.
This is a situation that requires a separation or a violent conflict to resolve.
I actually posed the question to my resident crazy-a$$ liberal at work. If 9-11, for instance, could only bring us together for about 6 months, how do two groups of people with such vastly different viewpoints on how the country should be run, ever coexist?
He conceded my point and admitted that he saw no way either.