An education endeavor used to create a more tolerant, cohesive, and responsible citizenry. Introduced at the earliest stages of cognitive understanding, it creates the reflexive response to differing ideas based on personal preferences or information unknown to the individual. This becomes more effective and most needed in areas lacking diversity. The challenge becomes teaching children at a young age to gain the critical perspective before offering a verdict of what they know against what they do not know or preferences for verses preferences against.
The authority of control should be cautious and never force a self-preference on youth in the form of personal bias relating to politics, religion, lifestyle preferences, or any other modern disagreements society is working through. It is not used for a one-America indoctrination but a way to consider differences of the unknown weighed against the knowledge or information of known.