Ключевые слова: 9, 11, 2001, america, attack, background, banner, calendar, center, concept, date, day, death, eleven, event, fallen, flag, government, grief, history, honor, long, loss, manhattan, memorial, memory, mourning, national, new, object, patriotism, political, prayer, remembrance, sadness, september, skyscraper, sorrow, states, symbol, terrorism, terrorist, towers, trade, twin, united, usa, victims, violence, york,