Inter-communal killings have almost stopped albeit partly thanks to self-segregation by rival ethnic groups.

ECONOMIST: Cracking down on crime in Kosovo

For example, she had a theory that government-funded Muslim schools in the Netherlands were fostering self-segregation, and asked if they should be closed.

ECONOMIST: Going to America

But some alumni of Britain's Deobandi institutions do advocate self-segregation by Muslims, especially where local indigenous culture is dominated by alcohol and drugs.

ECONOMIST: Islam in Britain and South Asia