Ключевые слова: adult, african american, app, application, black, building, call, casual, cell, cellphone, chat, city, concept, conversation, device, diverse, excited, female, front, going, group, holding, internet, male, man, media, message, mix raced, mobile, outdoor, outside, people, phone, portrait, smart, smartphone, social, speaking, square, street, talk, technology, text, typing, using, walking, woman, young,