In reply to Hugh J:
Not a blog, so you will have to go to the effort of reading a book, but very interesting nonetheless.
"The Righteous Mind" by Jonathan Haidt, subtitled :
"Why Good People are Divided by Politics and Religion".
Haidt is unusual in that he is a self-confessed "life long, instinctive, liberal" (he explicitly says he is using the distorted, loaded American sense of the word, i.e. a left-winger, not a classical Liberal), so may be sympathetic for you to read, but is capable of self-questioning. What will probably be somewhat less enjoyable is his approach and many of his conclusions. First, while recognising the tendency to political and religious tribalism ("all those wicked Tories/Shias/EU philes are stupid/vicious/ignoranant/evil" - fill in your own pet bogeyman group as required!), he tries to move beyond tribalism, including his own, admitted biases. He actually sets out both to understand and also to RESPECT views (and as far as possible, those upholding those heresies), different to or even radically different to his own, and to acknowledge that good, sensible men and women can consider the same evidence and come to strikingly different conclusions as a result.
He looks into things like cognitive dissonance, confirmation bias and the like, particularly as general human traits, not the characteristics of any given (normally opposing), religious or political sect or faction. Interestingly one of his main questions, as a "liberal" is why are liberals so continually getting beaten in popular polls, why is their intellectual and political hegemony seeming to be in the process of progressive collapse, and, as an ancillary question, why do they have so little idea how to adjust to or learn from repeated defeats, but rather tend to reinforce failure and repeat errors. As I point out, this is Haidt's slant, not mine - he WANTS "liberals" to act and speak in a way that will be more effective and successful, but fears that they will not, that their self-destructive habits are too ingrained and knee-jerk. So he remains a liberal, albeit a rather more than usually thoughtful and chastened one.
The style is pleasant as well, not so infused with arrogance and the impression of absolute certainty that permeates some such works, where the initially interesting thesis is wildly overextended as an explanation of everything, despite its obvious limits and flaws. "The Black Swan" and "Guns Germs and Steel" I would put into those categories.
You may not find it comfortable reading though.