The thing that can reunite the world is a poetry, or a words that is well written in form of poetry. By the flowery words of the poets. The imagination and the feelings of his readers can be manipulated, in a good way? Maybe yes, poetry can contribute to the peace that the humanity is seeking for centuries.
If a person listen to a poetry, it can feed their mind with the positive vibes of the poets. A poem is an eye opener on how you feel, some poets write a poems that sounds like it was only made for you. But sometimes, feelings and emotions are all same, the difference is that the person who holds it. That made a poem sounds like only for you, poem are naked words. The words that is in the poem are usually made for someone, and its real. Poems are real, it is the only that a person can be true except for their journals and diary. Poems what made the world turn around except for money.
Song is a poem, the only difference is that a song can be sung and poetry is recited with the person who is confident enough to be honest.