Social network.
The only group I can think of which is without clear boundaries or common identity is Anonymous.
The only answer is the Torah.
Identity
Cultural assimilation is the blending of culturally distinct groups into a single group with a common culture and identity. It involves the minority group adopting elements of the dominant culture, often leading to a loss of their own cultural practices and traditions. It can be a complex process that impacts social dynamics and individual identities.
ethnic group
The term for an independent country whose people mostly share a common identity is a nation-state. This type of state typically has a shared culture, history, language, and values among its population.
A social identity group that is targeted or object of oppression or a group that is systematically mistreated.
Pierre W. Boudreault has written: 'Aux confins de la nation' -- subject(s): Boundaries, Social aspects, Globalization, Group identity
Group identity refers to the sense of belonging and shared characteristics or experiences that people have with others in a particular group. It can include cultural, ethnic, social, political, or other affiliations that contribute to an individual's sense of self within a larger community. Group identity often plays a role in shaping individual behaviors, beliefs, and attitudes.
A group that is systematically mistreated or oppressed.
A gang is a group of three or more people who, through the organization, formation, and establishment of an assemblage, share a common identity.
The Moluccas (as they are called) are a group of islands that have a distinct common history, population and cultural identity, but the islands are part of Indonesia.