Well, they said it's not terrorism. Just some drunken guy acting like crazy. Shit happens, you know.
I don't know how you'd define terrorism, but someone plunging with a car into a crowd of peaceful citizens and causing pain, destruction and even death, pretty much has the same effect: causing chaos, fear and insecurity. We've yet to learn if there were some additional motivations behind this act, or it was just the alcohol, but the point is this:
If we can't protect the public from every single act of violence by a deluded madman, then why single out specific segments as the potentially predominant sources of violence? Yes, I guess I'm talking about that arbitrary ban for citizens of 7 countries which aren't even the major sources of terrorists (hello? Saudi Arabia?)
No matter if this guy did this under the influence of alcohol, drugs, or in other cases, a twisted understanding of a particular religious doctrine, he IS a terrorist - because his acts have caused terror. So, how do we handle home-grown crackpots and/or drunkards? How do we protect the public? Who should we ban this time?