scots, tamils, mizos have issues from race, culture dating back to many millenia in the lands they fight. They look different and do things differently from the people they fight and they are fighting only in recent times. Tamils were in lanka 2000 years ago too. Now the national identities are becoming strong and the minorities have to face the ire of the rest is the reason these people fight. Muslims are separatist everywhere they live. Pick a place.
