> An attack of revenge, maybe against the military or police forces, would be what's expected.

Sure:

http://en.wikipedia.org/wiki/Beslan_school_hostage_crisis

Ironically Ingush and Chechen islamic terrorists are persistently referred to as "rebels" and "separatists" by Western media, BBC which is perceived as more "independent" news outlet didn't utter once word "terrorist" even during the coverage of the heinous terror attack against children.

People committing acts of terror are terrorists regardless of their aims.