Division between ideologies and within a single ideology may lead to conflict, intolerance, prejudice, repression, rivalry, injustice, and sometimes war. Conflict between religious, political or intellectual ideologies may take the form of propaganda and other tensions or pressures, and may lead to civil war, international war or cold war. It may involve rivalry for ideological influence in Third World countries or other potentially useful or strategic areas.
Ideological conflict is one of the stresses in modern society that permeates all human activities. It reaches into the classroom and the home, and makes antagonists among schoolmates, between them and the school system, and it divides families. Thus from an early age, children become accustomed to the warfare of ideas, and as adults they carry on their own ideological battles, bringing these to national and international levels. They are not only conditioned towards engaging in ideological conflicts and rivalries, but also to a conduct that is more emotional than logical and which casts their opponents into satanic roles or roles of enemies of humanity. This leads to witchhunts, pogroms, purges, prejudices and hostilities that erupt into violence.