Communalism : example

About 45 km from the national capital, 50-year-old Mohammad Akhlaq was beaten to death by a mob instigated by a rumour and an announcement at a local temple about a Muslim family storing and consuming beef

http://indianexpress.com/article/opinion/editorials/murder-in-bisara/

Caste and Politics: Nepal's case

Though a small country, Nepal has more than a hundred ethnic groups. However, it has always been ruled by the Bahun-Chettri (Brahmin-Kshatriya) hill elite which, together with other hill upper castes, accounts for less than 30 per cent of the population. The leadership of the three major political parties, as well as that of the smaller pro-monarchy groups, belongs to this group. On the other hand, the Janajatis (hill tribes), Tharus (plains tribes), Dalits and Madhesis have traditionally been the oppressed groups.

Example of communal clashes in India

1. Godhra 2002
2. Kandahamal, Odisa, 2008
3. Mumbai, 1993