I have a lot to say on this anniversary, but I will spare you. Instead, I'd like to point you to some poetry written about 9/11. I don't know what it is about poetry, that draws us to it, especially in our darkest times, but it can be healing. There is power found in poetry even if we are physically powerless. First, Suheir Hammad's poem written in 2001 titled "First Writing Since."
Next, Mike Rosen's poem "When God Happens," written and performed in 2012.
As well, here are a couple links to great posts by Poetry Foundation. Click here for two poems by Wislawa Szymborska (translated from Polish) and American poet William Matthews.
Click here to hear (then) U.S. poet laureate Billy Collins read "The Names" as well as a discussion about how he composed it.