is it effective and justifiable for a government of a certain nation-state to use purges, gulags, democide, politicide, classicide and genocide as an instrument of strengthening the government and political powers?

short answer, its NOT justified to do any of those things

ccp would be the answer : )

explanation:

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)