On what grounds can people have differences?

people have differences on certain grounds:

i. People perceive their identities in singular and exclusive terms, then it becomes very difficult to accommodate. For example, Northern Ireland saw themselves as only Catholic or Protestant, their differences were difficult to reconcile.

ii. Political leaders should raise the demands of any community within the constitutional framework and are not at the cost of another community, but we don't see such a situation. For example, the demand for ‘only Sinhala' was at the cost of the interest and identity of the Tamil community in Sri Lanka

iii. Government reacts to the demands of different groups. Examples of Belgium and Sri Lanka, if the rulers are willing to share power and accommodate the reasonable demands of the minority community, social divisions become less threatening for the country.