9/11: What We Learned [video]

On September 11, 2001, the unthinkable happened. That day and the days that followed are forever etched in our memories. During that time, we learned so many things we wish we could forget. But even in the darkest moments, light emerged, and we began to learn some powerful truths.  Here’s a video by Igniter Media that speaks to this:

Those who cannot remember the past, are condemned to repeat it. -George Santayana

What do you think of the video? What did you learn from 9/11?