Of course it's an act of terrorism. I find it interesting that the White House was reluctant at first to define it as such. Terrorism is:
1. a person, usually a member of a group, who uses or advocate s terrorism.
2. a person who terrorizes or fri ghtens others.
I would say yesterday's attack is an example of this terrorism. My heart aches for this country and the damage that is being done to our society through these violent acts.