Ключевые слова: 1st of may, background, blue, board, card, celebrate, celebration, closeup, clothing, concept, construction, day, denim, equipment, greeting, happy, holiday, industrial, industry, jeans, label, labor, labour, male, man, material, mechanic, metal, nail, national, nobody, object, occupation, patriotic, patriotism, pocket, poster, sign, steel, symbol, text, tool, top view, usa, vintage, wooden, word, work, worker, wrench,