Ключевые слова: africa, african, afro, altruism, american, area, background, bags, blue, care, charity, cleaner, cleaning, collecting, community, diverse, ecology, environment, environmentalist, friends, garbage, group, happy, leisure, lifestyle, litter, man, millennial, multiethnic, nature, outdoors, park, participating, people, public, rubbish, selfless, smiling, social, summer, trash, unifom, volunteer, volunteering, volunteerism, work, young,