In USA gangs in prison organize around racial cohorts.
You have
The Aryan Brotherhood (the White gang)
The Kinfolk (the Black gang)
The Latin Kings (the Latinx gang, sometimes Italians are included in here idk)
The NDN Boys (Native Americans, includes Metis)
The Others which is like a miscellaneous box for Jews, Asians, Pacific Islanders and any other group that doesn't fit in with the aforementioned
How do prisons work in your country?