How is peace defined? Hitler wanted peace, on his terms. Is a world peace the subjugation of all peoples? Perhaps, we need to define peace and how it is manifested in reality. Marxist Socialism advocates a world wide peace based on a mandated equality of all people, a blind and obedient adherence to government, except those in government. The American Constitution advocates a peace based upon individual freedom, without blind obedience. Theocracies advocate peace based on the same principles as Marxism. Is peace a herding process where all are cattle and engineered to accommodate the wants of a government, as in human resource?
A utopia is a promise of dictators. What are you being taught?
Of the 'isms' mentioned, which has brought more to the world, which has resulted in devastation?