tribalism
noun [ U ] uk/ˈtraɪ.bəl.ɪ.zəm/ us/ˈtraɪ.bəl.ɪ.zəm/
部落制度;部落主义;部族意识
the state of existing as a tribe, or a very strong feeling of loyalty to your tribe
（政治或社会群体的）派性
a very strong feeling of loyalty to a political or social group, so that you support them whatever they do