Ключевые слова: 21 september, background, bird, blue, card, celebration, day, day of peace, design, dove, earth, environment, event, faith, flight, fly, freedom, friendship, global, globe, greeting, holiday, hope, icon, illustration, international, international day of peace, leaf, love, olive, peace, peace day, peaceful, pigeon, planet, plant, poster, prosperous, sketch, sky, smile, social media, symbol, together, web, world, youth,