Empty Walls

I don't want to focus on the music this time, but on the video.
You might know Serj Tankian from System of a Down. He's made some songs during the last months without System. Empty Walls is one of those.
It's very impressing I think. My brother in law gave it to me and told me to watch out for the
hints, especially for those with the twin towers (in the beginning). Very impressing and... shocking. I'd like you to watch it and to think about it...

Have a good day!
Yours,
Chrissy