9/11 anniversary is a reminder of freedom's vulnerability

This Sunday marks the 15th anniversary of the terrorist attacks on the World Trade Center and the Pentagon — now knowingly referred to as 9/11.

In the days leading up to it as well as Sunday itself there will be many remembrances of that awful Tuesday morning 15 years ago when, as many have put it, “our world changed forever.” It’s a fair statement to make, regardless of where you live on this globe.

The remembrances taking place will range from simple memorial ceremonies to broadcasting of numerous documentaries about the day 19 terrorists hijacked four commercial jetliners, flying two into t...