I'm not sure this is the proper use of the word "spasm." Via Merriam-Webster online:
Main Entry: spasm
Etymology: Middle English spasme, from Middle French, from Latin spasmus, from Greek spasmos, from span to draw, pull
1 : an involuntary and abnormal muscular contraction
2 : a sudden violent and temporary effort or emotion
There's nothing temporary, abnormal or sudden about violence in Iraq. If the media weren't stricken with institutional ADD they might realize that fact.