can i get a few points for group discussion on the topic " destabilizing forces within a nation: challenges to a nation"

We recommend you to write such answers using your own thoughts and ideas.  However, some pointers have been given for your reference:

There are various forces that can lead to destabilisation in the nation:

• Casteism: Root cause of all evils in the society. 
• Communalism: India is a secular country and therefore, discrimination and voting on the basis of one's religion can cause destabilisation in the nation.
• Regionalism: Favouring one's region over the others can benefit one region and not the whole nation. 
• Terrorism: Instills terror and violence and is a hindrance to a nation's development.
• Separatist tendencies of the political parties: Political parties employing "divide and rule" policy to remain in power can instill hatred against the people of one state against the another.