Tribalism is a strong identification with a group, leading to intense loyalty and prioritizing that group's interests, often characterized by an "us vs. them" mentality. This can manifest as loyalty to a social, political, or ethnic group and may result in negative attitudes or behaviors toward those outside the group. It is a deep-rooted human behavior stemming from an ancient survival instinct; however, in modern society, it can also extend to other affiliations, such as political parties, occupations, or even fan bases.