While "us" and "not us" is biologically programmed into our brains to insure our physical survival on the ego plane, our spiritual survival requires us to transcend this instinct and to recognize that we all one for all and all for one.
This first reflection (on the first principle) entails the tribal history of homo sapiens where one group often perceived other groups as competitors for the scarce resources needed for survival. Some brain scientists theorize that human beings are neurologically programmed to defend and attack the “not us”.
Religions have thrived on their exclusionary tactics and appeal to humans that they are special while the” not them” are a threat of some sort to be excluded from the circle of the group if not extinguished.
Jesus taught something very different when He said we should love our enemies.
Unitarian Universalists affirm and promote something very different when they acknowledge the worth and dignity of every person.
Markham, David. 16 Reflections On The First Principle of Unitarian Universalism (The seven principles of Unitarian Universalism) (Kindle Locations 11-13). . Kindle Edition.