I completely agree with your observation about labels, whether political or descriptive, and their impact on self-identification, ultimately leading to self-segregation. Though not explicitly stated, I more than agree with the assertion that you suggested in your second paragraph, this being that self-sorting also being due to geographic divides as well as interpersonal divides. That no matter what, with the people of any community a majority opinion will surface and become the norm, attracting outsiders of similar beliefs, growing that community in size and influence. Though, after reading your post I was left with a want for more knowledge about some of the things you suggested, for example you mentioned that in all democracies, particularly
