For years after President John F. Kennedy's assassination in November 1963, people would ask, "Where were you when you heard the news?" For a younger generation, it's "Where were you on 9/11?"

Most everyone over the age of 30 can tell you. But 20 years later, a more apt question for each of us might be: Where are we as a nation? What has happened to us? Who are we?

Kathleen Parker writes a twice-weekly column on politics and culture. She received the Pulitzer Prize for Commentary in 2010.