Ключевые слова: 911, america, american flag, buildings, busy, celebration, ceremony, city, cityscape, commemoration, crossing, demonstration, event, flagwaving, man, metropolitan, national pride, nationalism, new york city, parade, patriotic, patriotism, people, protest, rally, remembrance, road, september 11th, skyline, street, support, symbol, terrorist attacks, traffic, united states, united states of america, urban, usa, walking, waving, world trade center,