To feel ashamed means growing to be sane

When I saw this video about soldiers killing monks in Tibet,
https://www.youtube.com/watch?v=4GKmtb6rrGw
harming wonderous and wonderful people, I wonder how is it possible that people are like this.
And when millions of soldiers are there?
I ask myself: don't they feel ashamed?
Are they gonna get executed if they refuse to be part of that?
Love is God.

https://www.youtube.com/watch?v=4GKmtb6rrGw