Anger and Hatred are emotional lethal weapons from the energetic perspective.
Yes, you may feel huge hatred toward what has happened on 9/11, however, don't you feel that your emotional distress triggers and invites more terrors and instabilities in the world?
Indignation can be fine, however, still does it trigger other waves of Hatred around you.
And most of the sensitives feel big blows of negative energies on 9/11.
When you think about how to deal with Terrorism, you have to check your emotional weapons you use in the daily life.