All great questions must be raised by great voices, and the greatest voice is the voice of the people - speaking out - in prose, or painting or poetry or music; speaking out - in homes and halls, streets and farms, courts and cafes - let that voice speak and the stillness you hear will be the gratitude of mankind.
Peace always begins within each of us. Our ability to create in the world depends on our ability, first, to work to create peace in our own lives. It's much easier to advocate peace on Earth than it is to be able to bring peace your own home. Or your own heart.